• Sum of Natural Numbers (second proof and extra footage)

    MAIN VIDEO IS AT: http://youtu.be/w-I6XTVZXww More links & stuff in full description below ↓↓↓ Ed Copeland and Tony Padilla are physicists at the University of Nottingham. Support us on Patreon: http://www.patreon.com/numberphile NUMBERPHILE Website: http://www.numberphile.com/ Numberphile on Facebook: http://www.facebook.com/numberphile Numberphile tweets: https://twitter.com/numberphile Subscribe: http://bit.ly/Numberphile_Sub Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): http://bit.ly/MSRINumberphile Videos by Brady Haran Brady's videos subreddit: http://www.reddit.com/r/BradyHaran/ Brady's latest videos across all channels: http://www.bradyharanblog.com/ Sign up for (occasional) emails: http://eepurl.com/YdjL9 Numberphile T-Shirts: https://te...

    published: 11 Jan 2015
  • ASTOUNDING: 1 + 2 + 3 + 4 + 5 + ... = -1/12

    Read this too: http://www.bradyharanblog.com/blog/2015/1/11/this-blog-probably-wont-help More links & stuff in full description below ↓↓↓ EXTRA ARTICLE BY TONY: http://bit.ly/TonyResponse The sum of all natural numbers (from 1 to infinity) produces an "astounding" result. ANOTHER PROOF & EXTRA FOOTAGE: http://youtu.be/E-d9mgo8FGk MORE: http://youtu.be/0Oazb7IWzbA NY Times article on this: http://nyti.ms/1iftqSv Tony Padilla and Ed Copeland are physicists at the University of Nottingham. They talk physics at our sixty symbols channel: http://www.youtube.com/sixtysymbols Grandi's Series: 1-1+1-1.... http://www.youtube.com/watch?v=PCu_BNNI5x4 Read more about divergent series: http://en.wikipedia.org/wiki/Divergent_series We also here that Chapter XIII of Konrad Knopp's book, "Theory and ...

    published: 09 Jan 2014
  • Number Trick - Numberphile

    Just a quick number trick with Dr James Grime. More links & stuff in full description below ↓↓↓ NUMBERPHILE Website: http://www.numberphile.com/ Numberphile on Facebook: http://www.facebook.com/numberphile Numberphile tweets: https://twitter.com/numberphile Subscribe: http://bit.ly/Numberphile_Sub Videos by Brady Haran Patreon: http://www.patreon.com/numberphile Brady's videos subreddit: http://www.reddit.com/r/BradyHaran/ Brady's latest videos across all channels: http://www.bradyharanblog.com/ Sign up for (occasional) emails: http://eepurl.com/YdjL9 Numberphile T-Shirts: https://teespring.com/stores/numberphile Other merchandise: https://store.dftba.com/collections/numberphile

    published: 02 Jun 2013
  • Ramanujan: Making sense of 1+2+3+... = -1/12 and Co.

    The Mathologer sets out to make sense of 1+2+3+ ... = -1/12 and some of those other notorious, crazy-looking infinite sum identities. The starting point for this video is the famous letter that led to the discovery of self-taught mathematical genius Srinivasa Ramanujan in 1913 (Ramanujan is the subject of the movie "The man who knew infinity" that just started showing in cinemas.) Find out about how these identities come up in Ramanujan's work, the role of "just do it" in math, the rules for adding infinite sums on Earth and other worlds, and what all this has to do with the mathematical super star the Riemann Zeta function. You can download the jpeg of Ramanujan's letter to Hardy that I put together for this video here: http://www.qedcat.com/misc/ramanujans_letter.jpg (quite large) You c...

    published: 22 Apr 2016
  • Sum of two number is 95. If one exceed the other by 15. Find the number.

    Class 8th maths, Ex2.2 Q 4

    published: 14 Apr 2017
  • The sum of all counting numbers equals WHAT?

    This is the second half of a lesson, watch the first half here: http://youtu.be/yudhkUUzAgY This is a well-known and hugely controversial result. The "proof" I've demonstrated is not the only way to show it - there are far more sophisticated and convincing ways to do it - but suffice to say that I went through it to raise questions and provoke thought rather than to make a statement about its validity or otherwise! Hope it makes you think.

    published: 17 Jul 2014
  • Sum of Fibonacci Numbers Trick

    A little trick to sum Fibonacci numbers. Try it out.

    published: 18 Sep 2016
  • How to Find the Sum of odd Numbers - Using Sum of N terms Formula of Arithmetic Series

    http://ItsMyAcademy.com/arithmetic-sequences/ For Free Complete Video Tutorial on Sequence & Series. For more videos on sequence and series. To Find the sum of odd numbers we have to first make an arithmetic sequence or arithmetic series then we can easily find the sum of odd numbers from sum of n term formula of arithmetic sequence. its is simple . In this video we are dealing with such problems. Here we need to find the sum of odd numbers from 0 to50 using the sum of n term formula of arithmetic sequence. To do so we will first arrange the all odd numbers between 0 to 50 in increasing order then taking 1 as first term and 49 as last term we will make an arithmetic series. By using nth term formula of arithmetic sequence we will get the total number of terms of the sequence and then by ...

    published: 25 Jan 2011
  • sum of consecutive numbers problem using equation

    Learn to write equation for sum of consecutive numbers. The sum of three consecutive numbers is 225. find the numbers. To learn more such math lessons visit our channel youtube.com/MathsSmart or subscribe to http://www.youtube.com/MathsSmart.

    published: 01 Sep 2013
  • Find the sum of 'n' Consecutive even numbers - Math Trick

    Find The Sum Of 'n' Consecutive Even Numbers. Makes is so much easier to put these numbers together! Now try adding up a sequence of even numbers! Good luck! Our YouTube Channels: English Channel: https://www.youtube.com/user/APPUSERIES Hindi Channel: https://www.youtube.com/user/APPUSERIESHINDI Kannada Channel: https://www.youtube.com/user/APPUSERIESKANNADA Tamil Channel: https://www.youtube.com/user/APPUSERIESTAMIL Telugu Channel: https://www.youtube.com/user/APPUSERIESTELUGU Gujarati Channel: https://www.youtube.com/user/APPUSERIESGUJARATI Marathi Channel: https://www.youtube.com/user/APPUSERIESMARATHI Sindhi Channel: https://www.youtube.com/user/APPUSERIESSINDHI Bengali Channel: https://www.youtube.com/user/APPUSERIESBENGALI Academy Channel: https://www.youtube.com/user/AppuSeriesAcad...

    published: 25 Jan 2013
  • Sum and product of rational numbers | Rational and irrational numbers | Algebra I | Khan Academy

    Learn that the sum or the product of two rational numbers is always a rational number. Watch the next lesson: https://www.khanacademy.org/math/algebra/rational-and-irrational-numbers/rational-and-irrational-expressions/v/proof-that-rational-times-irrational-is-irrational?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI Missed the previous lesson? https://www.khanacademy.org/math/algebra/rational-and-irrational-numbers/irrational-numbers/v/recognizing-irrational-numbers?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI Algebra I on Khan Academy: Algebra is the language through which we describe patterns. Think of it as a shorthand, of sorts. As opposed to having to do something over and over again, algebra gives you a simple way to express that repetitive process. It's also seen as...

    published: 23 Dec 2013
  • Algebra 1 - How to find three consecutive odd numbers with a sum of 63 - Math Help - Online Tutor

    http://www.freemathvideos.com In this video series I show you how to solve a word problem by first understanding the what the problem is asking. We then assign variables for our unknowns and create equations to represent our problem. We then use solving techniques to find the values of the equation. I show how to solve math problems online during live instruction in class. This is my way of providing free tutoring for the students in my class and for students anywhere in the world. Every video is a short clip that shows exaclty how to solve math problems step by step. The problems are done in real time and in front of a regular classroom. These videos are intended to help you learn how to solve math problems, review how to solve a math problems, study for a test, or finish your homework.I...

    published: 11 Nov 2010
  • sum of squares

    Take cubes in an amount equal to the square of an integer. It can be laid out square of them. Take five such squares for the first five natural numbers. Place them on top of each other and stick together. Receive the item, like a ladder. Three of these items can be attached to each other and have a shape similar to a parallelepiped with a protrusion. The other three parts are formed in a similar shape. Combining them, we get a box with no voids. The volume of the parallelepiped, in terms of number of blocks is equal, on the one hand, the product of the number of blocks included in each direction, and on the other hand, the sum of squares of the first five digits, multiplied by six. From this we can deduce the general hypothesis about the sum of the squares of the first n natural numbers. S...

    published: 14 Jan 2015
  • A number is 3/2 times the other number. If their sum is 45. Find the numbers.

    A number is 3/2 times the other number. If their sum is 45. Find the numbers.

    published: 17 May 2016
  • Mr Excel & excelisfun Trick 101: Sum Numbers from Cells That Contain Both Text & Numbers

    Download workbook: http://people.highline.edu/mgirvin/ExcelIsFun.htm See Mr Excel and excelisfun use two methods to add the numbers from cells that have both numbers and text. See these tricks: 1. LEFT and IF Functions to extract numbers and then add 2. Left function and then the plus symbol to add numbers that are text (because SUM Function ignores text, but plus symbol does not 3. Single cell array formula that uses IF LEFT and SUM 4. Text To Columns and Custom Number Formatting 5. Apply General Number Format with: Ctrl + Shift + Enter

    published: 15 Mar 2012
  • Challenge example: Sum of integers | Linear equations | Algebra I | Khan Academy

    Sum of Consecutive Odd Integers Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/solving-linear-equations-and-inequalities/More-equation-practice/e/integer_sums?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI Watch the next lesson: https://www.khanacademy.org/math/algebra/solving-linear-equations-and-inequalities/More-equation-practice/v/2003-aime-ii-problem-1?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI Missed the previous lesson? https://www.khanacademy.org/math/algebra/solving-linear-equations-and-inequalities/More-equation-practice/v/sum-consecutive-integers?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI Algebra I on Khan Academy: Algebra is the language through which we describe patterns. Think of it as a shortha...

    published: 11 Jun 2010
Sum of Natural Numbers (second proof and extra footage)

Sum of Natural Numbers (second proof and extra footage)

  • Order:
  • Duration: 21:06
  • Updated: 11 Jan 2015
  • views: 1085207
videos
MAIN VIDEO IS AT: http://youtu.be/w-I6XTVZXww More links & stuff in full description below ↓↓↓ Ed Copeland and Tony Padilla are physicists at the University of Nottingham. Support us on Patreon: http://www.patreon.com/numberphile NUMBERPHILE Website: http://www.numberphile.com/ Numberphile on Facebook: http://www.facebook.com/numberphile Numberphile tweets: https://twitter.com/numberphile Subscribe: http://bit.ly/Numberphile_Sub Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): http://bit.ly/MSRINumberphile Videos by Brady Haran Brady's videos subreddit: http://www.reddit.com/r/BradyHaran/ Brady's latest videos across all channels: http://www.bradyharanblog.com/ Sign up for (occasional) emails: http://eepurl.com/YdjL9 Numberphile T-Shirts: https://teespring.com/stores/numberphile Other merchandise: https://store.dftba.com/collections/numberphile
https://wn.com/Sum_Of_Natural_Numbers_(Second_Proof_And_Extra_Footage)
ASTOUNDING: 1 + 2 + 3 + 4 + 5 + ... = -1/12

ASTOUNDING: 1 + 2 + 3 + 4 + 5 + ... = -1/12

  • Order:
  • Duration: 7:50
  • Updated: 09 Jan 2014
  • views: 5437086
videos
Read this too: http://www.bradyharanblog.com/blog/2015/1/11/this-blog-probably-wont-help More links & stuff in full description below ↓↓↓ EXTRA ARTICLE BY TONY: http://bit.ly/TonyResponse The sum of all natural numbers (from 1 to infinity) produces an "astounding" result. ANOTHER PROOF & EXTRA FOOTAGE: http://youtu.be/E-d9mgo8FGk MORE: http://youtu.be/0Oazb7IWzbA NY Times article on this: http://nyti.ms/1iftqSv Tony Padilla and Ed Copeland are physicists at the University of Nottingham. They talk physics at our sixty symbols channel: http://www.youtube.com/sixtysymbols Grandi's Series: 1-1+1-1.... http://www.youtube.com/watch?v=PCu_BNNI5x4 Read more about divergent series: http://en.wikipedia.org/wiki/Divergent_series We also here that Chapter XIII of Konrad Knopp's book, "Theory and Application of Infinite Sequences and Series", is very good if you can get your hands on it. Support us on Patreon: http://www.patreon.com/numberphile NUMBERPHILE Website: http://www.numberphile.com/ Numberphile on Facebook: http://www.facebook.com/numberphile Numberphile tweets: https://twitter.com/numberphile Subscribe: http://bit.ly/Numberphile_Sub Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): http://bit.ly/MSRINumberphile Videos by Brady Haran Brady's videos subreddit: http://www.reddit.com/r/BradyHaran/ Brady's latest videos across all channels: http://www.bradyharanblog.com/ Sign up for (occasional) emails: http://eepurl.com/YdjL9 Numberphile T-Shirts: https://teespring.com/stores/numberphile Other merchandise: https://store.dftba.com/collections/numberphile
https://wn.com/Astounding_1_2_3_4_5_..._1_12
Number Trick - Numberphile

Number Trick - Numberphile

  • Order:
  • Duration: 3:29
  • Updated: 02 Jun 2013
  • views: 828913
videos
Just a quick number trick with Dr James Grime. More links & stuff in full description below ↓↓↓ NUMBERPHILE Website: http://www.numberphile.com/ Numberphile on Facebook: http://www.facebook.com/numberphile Numberphile tweets: https://twitter.com/numberphile Subscribe: http://bit.ly/Numberphile_Sub Videos by Brady Haran Patreon: http://www.patreon.com/numberphile Brady's videos subreddit: http://www.reddit.com/r/BradyHaran/ Brady's latest videos across all channels: http://www.bradyharanblog.com/ Sign up for (occasional) emails: http://eepurl.com/YdjL9 Numberphile T-Shirts: https://teespring.com/stores/numberphile Other merchandise: https://store.dftba.com/collections/numberphile
https://wn.com/Number_Trick_Numberphile
Ramanujan: Making sense of 1+2+3+... = -1/12 and Co.

Ramanujan: Making sense of 1+2+3+... = -1/12 and Co.

  • Order:
  • Duration: 34:31
  • Updated: 22 Apr 2016
  • views: 963762
videos
The Mathologer sets out to make sense of 1+2+3+ ... = -1/12 and some of those other notorious, crazy-looking infinite sum identities. The starting point for this video is the famous letter that led to the discovery of self-taught mathematical genius Srinivasa Ramanujan in 1913 (Ramanujan is the subject of the movie "The man who knew infinity" that just started showing in cinemas.) Find out about how these identities come up in Ramanujan's work, the role of "just do it" in math, the rules for adding infinite sums on Earth and other worlds, and what all this has to do with the mathematical super star the Riemann Zeta function. You can download the jpeg of Ramanujan's letter to Hardy that I put together for this video here: http://www.qedcat.com/misc/ramanujans_letter.jpg (quite large) You can access a scanned copy of Ramanujan's notebook here: http://http://www.imsc.res.in/~rao/ramanujan/NoteBooks/NoteBook1/chapterVIII/page3.htm If you want to watch some other videos that deal with these strange identities I recommend the following: https://youtu.be/0Oazb7IWzbA (a Numberphile video featuring the mathematician Edward Frenkel who is also talking about the connection between the Riemann Zeta function and Ramanujan's crazy identity.) https://youtu.be/8hgeIDY7We4 (James Grime's video (singingbanana & Numberphile) which aims at making sense of the formula at the heart of Ramanujan summation which I only flash briefly in the last part of the video.) https://youtu.be/XFDM1ip5HdU (a very nice 3Blue1Brown video that makes sense of the identity 1+2+4+8+ ... = –1 in a way that is totally different from the one I am talking about in this video.) This week’s video is in response to a large number of you and my students at university asking me for my take on the whole 1+2+3+... =-1/12 business. Initially, the plan was to come up with one of my usual 15 minute long videos. However, after several unsuccessful attempts at not exceeding the magic Mathologer time limit, I realised that any “short” video like this would just be a clone of one of those wrong/misleading accounts of this topic that YouTube is full of. So, rather than just give up completely on this project I decided to do what you should never do if you actually want people to watch your videos, namely simply go for it and not look at the clock. The result – a video that is an insane 35 minutes long in which I say all the things that I think need to be said and can be said only using elementary math to (just barely) do this amazing topic justice. Thank you very much to Danil Dmitriev the official Mathologer translator for Russian for his subtitles. Enjoy :) Burkard P.S.: If you know calculus and want to read up on all this some more, beyond what is readily available via the relevant Wiki pages and other internet resources, I recommend you read the last chapter of the book by Konrad Knopp, Theory and applications of infinite series, Dover books, 1990 (actually if you know German, read the extended version of this chapter in the original 1924 edition of the book). People usually recommend Hardy's book, Divergent series, but I'd say only look at this after you've looked at Knopp's book which I find a lot more accessible. The Hardy who wrote this book is the Hardy who I mention at the beginning of the video! Having said that, Hardy's book does have quite a bit of detail on how Ramanujan summation applies to the Zeta function; see chapters 13.10. and 13.17.
https://wn.com/Ramanujan_Making_Sense_Of_1_2_3_..._1_12_And_Co.
Sum of two number is 95. If one exceed the other by 15. Find the number.

Sum of two number is 95. If one exceed the other by 15. Find the number.

  • Order:
  • Duration: 2:03
  • Updated: 14 Apr 2017
  • views: 244
videos
Class 8th maths, Ex2.2 Q 4
https://wn.com/Sum_Of_Two_Number_Is_95._If_One_Exceed_The_Other_By_15._Find_The_Number.
The sum of all counting numbers equals WHAT?

The sum of all counting numbers equals WHAT?

  • Order:
  • Duration: 8:52
  • Updated: 17 Jul 2014
  • views: 10608
videos
This is the second half of a lesson, watch the first half here: http://youtu.be/yudhkUUzAgY This is a well-known and hugely controversial result. The "proof" I've demonstrated is not the only way to show it - there are far more sophisticated and convincing ways to do it - but suffice to say that I went through it to raise questions and provoke thought rather than to make a statement about its validity or otherwise! Hope it makes you think.
https://wn.com/The_Sum_Of_All_Counting_Numbers_Equals_What
Sum of Fibonacci Numbers Trick

Sum of Fibonacci Numbers Trick

  • Order:
  • Duration: 6:08
  • Updated: 18 Sep 2016
  • views: 195662
videos
A little trick to sum Fibonacci numbers. Try it out.
https://wn.com/Sum_Of_Fibonacci_Numbers_Trick
How to Find the Sum of odd Numbers - Using Sum of N terms Formula of Arithmetic Series

How to Find the Sum of odd Numbers - Using Sum of N terms Formula of Arithmetic Series

  • Order:
  • Duration: 4:12
  • Updated: 25 Jan 2011
  • views: 56945
videos
http://ItsMyAcademy.com/arithmetic-sequences/ For Free Complete Video Tutorial on Sequence & Series. For more videos on sequence and series. To Find the sum of odd numbers we have to first make an arithmetic sequence or arithmetic series then we can easily find the sum of odd numbers from sum of n term formula of arithmetic sequence. its is simple . In this video we are dealing with such problems. Here we need to find the sum of odd numbers from 0 to50 using the sum of n term formula of arithmetic sequence. To do so we will first arrange the all odd numbers between 0 to 50 in increasing order then taking 1 as first term and 49 as last term we will make an arithmetic series. By using nth term formula of arithmetic sequence we will get the total number of terms of the sequence and then by simply using sum of n term of an arithmetic sequence we can easily calculate the sum of odd numbers. In this way we can get the sum of any odd numbers or even numbers from any where to any where. Just we should know the trick. Hope You learn how to find the sum of odd numbers using the n terms formula of arithmetic sequences. How to Find the Sum of odd Numbers - Using Sum of N terms Formula of Arithmetic Series In previous videos we learn to prove Arithmetic progression and then finding the sum. You are good in such problems too. Now friend in this video lesson we are learning to find the sum of odd numbers by the method of sequence and series specially applying the sum of arithmetic progression formula.. Well let's start how to find sum of odd numbers. I hope you always sit with pen and notebook. Great ! How you are feeling now! It was quite easy right just few steps to find the sum of odd numbers between any two numbers. Steps to find Sum of Odd Numbers 1. First write the first term and last term of odd number. The form it as a AP. 2. Apply the nth term formula of arithmetic progression on the last term. 3. By doing so (step2) we will get the value of total number of terms in that AP. 4. Now since we know first term(a), last term (l), number of terms (n), we can easily apply the sum of arithmetic progression formula to get the sum of odd numbers. Cheers! Well friend here I have listed few exercise related to sum of Arithmetic progression just like above. Please try to solve these all. It will really help you. Q1. Find the sum of all odd numbers between 100 to 200. (ans = 7500) Q2. Find the sum of all odd integers between 2 and 100 divisible by 3. (Ans = 867)
https://wn.com/How_To_Find_The_Sum_Of_Odd_Numbers_Using_Sum_Of_N_Terms_Formula_Of_Arithmetic_Series
sum of consecutive numbers problem using equation

sum of consecutive numbers problem using equation

  • Order:
  • Duration: 6:33
  • Updated: 01 Sep 2013
  • views: 8178
videos
Learn to write equation for sum of consecutive numbers. The sum of three consecutive numbers is 225. find the numbers. To learn more such math lessons visit our channel youtube.com/MathsSmart or subscribe to http://www.youtube.com/MathsSmart.
https://wn.com/Sum_Of_Consecutive_Numbers_Problem_Using_Equation
Find the sum of 'n' Consecutive even numbers - Math Trick

Find the sum of 'n' Consecutive even numbers - Math Trick

  • Order:
  • Duration: 1:52
  • Updated: 25 Jan 2013
  • views: 9279
videos
Find The Sum Of 'n' Consecutive Even Numbers. Makes is so much easier to put these numbers together! Now try adding up a sequence of even numbers! Good luck! Our YouTube Channels: English Channel: https://www.youtube.com/user/APPUSERIES Hindi Channel: https://www.youtube.com/user/APPUSERIESHINDI Kannada Channel: https://www.youtube.com/user/APPUSERIESKANNADA Tamil Channel: https://www.youtube.com/user/APPUSERIESTAMIL Telugu Channel: https://www.youtube.com/user/APPUSERIESTELUGU Gujarati Channel: https://www.youtube.com/user/APPUSERIESGUJARATI Marathi Channel: https://www.youtube.com/user/APPUSERIESMARATHI Sindhi Channel: https://www.youtube.com/user/APPUSERIESSINDHI Bengali Channel: https://www.youtube.com/user/APPUSERIESBENGALI Academy Channel: https://www.youtube.com/user/AppuSeriesAcademy Other Similar Videos: https://www.youtube.com/watch?v=p1vqvJvg5Uw https://www.youtube.com/watch?v=OFkrRdh1YtY https://www.youtube.com/watch?v=9dGwkrmnDZ0 Stay Connected With Us : Facebook - https://www.facebook.com/APPUTHEYOGICELEPHANT/ Instagram - https://www.instagram.com/appuseries/ Twitter - https://twitter.com/AppuSeries Join Appu's Rhymes Club on FaceBook: https://www.facebook.com/groups/appurhymesclub/ Get our Android Apps: https://play.google.com/store/apps/de... Get our eBooks: https://itunes.apple.com/us/artist/ap... Subscribe now and be the first one to watch our new videos: https://www.youtube.com/user/appuseries To buy our Books and CDs, please visit us at http://www.appuseries.com
https://wn.com/Find_The_Sum_Of_'n'_Consecutive_Even_Numbers_Math_Trick
Sum and product of rational numbers | Rational and irrational numbers | Algebra I | Khan Academy

Sum and product of rational numbers | Rational and irrational numbers | Algebra I | Khan Academy

  • Order:
  • Duration: 2:46
  • Updated: 23 Dec 2013
  • views: 65854
videos
Learn that the sum or the product of two rational numbers is always a rational number. Watch the next lesson: https://www.khanacademy.org/math/algebra/rational-and-irrational-numbers/rational-and-irrational-expressions/v/proof-that-rational-times-irrational-is-irrational?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI Missed the previous lesson? https://www.khanacademy.org/math/algebra/rational-and-irrational-numbers/irrational-numbers/v/recognizing-irrational-numbers?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI Algebra I on Khan Academy: Algebra is the language through which we describe patterns. Think of it as a shorthand, of sorts. As opposed to having to do something over and over again, algebra gives you a simple way to express that repetitive process. It's also seen as a "gatekeeper" subject. Once you achieve an understanding of algebra, the higher-level math subjects become accessible to you. Without it, it's impossible to move forward. It's used by people with lots of different jobs, like carpentry, engineering, and fashion design. In these tutorials, we'll cover a lot of ground. Some of the topics include linear equations, linear inequalities, linear functions, systems of equations, factoring expressions, quadratic expressions, exponents, functions, and ratios. About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to Khan Academy’s Algebra channel: https://www.youtube.com/channel/UCYZrCV8PNENpJt36V0kd-4Q?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
https://wn.com/Sum_And_Product_Of_Rational_Numbers_|_Rational_And_Irrational_Numbers_|_Algebra_I_|_Khan_Academy
Algebra 1 - How to find three consecutive odd numbers with a sum of 63 - Math Help - Online Tutor

Algebra 1 - How to find three consecutive odd numbers with a sum of 63 - Math Help - Online Tutor

  • Order:
  • Duration: 3:17
  • Updated: 11 Nov 2010
  • views: 15473
videos
http://www.freemathvideos.com In this video series I show you how to solve a word problem by first understanding the what the problem is asking. We then assign variables for our unknowns and create equations to represent our problem. We then use solving techniques to find the values of the equation. I show how to solve math problems online during live instruction in class. This is my way of providing free tutoring for the students in my class and for students anywhere in the world. Every video is a short clip that shows exaclty how to solve math problems step by step. The problems are done in real time and in front of a regular classroom. These videos are intended to help you learn how to solve math problems, review how to solve a math problems, study for a test, or finish your homework.I post all of my videos on youtube but if you are looking for other ways to interact with me and my videos you can follow me on the following pages: Blogger: www.mrbrianmclogan.blogspot.com Twitter: @mrbrianmclogan Facebook: mrbrianmclogan
https://wn.com/Algebra_1_How_To_Find_Three_Consecutive_Odd_Numbers_With_A_Sum_Of_63_Math_Help_Online_Tutor
sum of squares

sum of squares

  • Order:
  • Duration: 1:01
  • Updated: 14 Jan 2015
  • views: 3121
videos
Take cubes in an amount equal to the square of an integer. It can be laid out square of them. Take five such squares for the first five natural numbers. Place them on top of each other and stick together. Receive the item, like a ladder. Three of these items can be attached to each other and have a shape similar to a parallelepiped with a protrusion. The other three parts are formed in a similar shape. Combining them, we get a box with no voids. The volume of the parallelepiped, in terms of number of blocks is equal, on the one hand, the product of the number of blocks included in each direction, and on the other hand, the sum of squares of the first five digits, multiplied by six. From this we can deduce the general hypothesis about the sum of the squares of the first n natural numbers. Sourse: http://www.etudes.ru/en/
https://wn.com/Sum_Of_Squares
A number is 3/2 times the other number. If their sum is 45. Find the numbers.

A number is 3/2 times the other number. If their sum is 45. Find the numbers.

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  • Duration: 2:29
  • Updated: 17 May 2016
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A number is 3/2 times the other number. If their sum is 45. Find the numbers.
https://wn.com/A_Number_Is_3_2_Times_The_Other_Number._If_Their_Sum_Is_45._Find_The_Numbers.
Mr Excel & excelisfun Trick 101: Sum Numbers from Cells That Contain Both Text & Numbers

Mr Excel & excelisfun Trick 101: Sum Numbers from Cells That Contain Both Text & Numbers

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  • Duration: 6:42
  • Updated: 15 Mar 2012
  • views: 24267
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Download workbook: http://people.highline.edu/mgirvin/ExcelIsFun.htm See Mr Excel and excelisfun use two methods to add the numbers from cells that have both numbers and text. See these tricks: 1. LEFT and IF Functions to extract numbers and then add 2. Left function and then the plus symbol to add numbers that are text (because SUM Function ignores text, but plus symbol does not 3. Single cell array formula that uses IF LEFT and SUM 4. Text To Columns and Custom Number Formatting 5. Apply General Number Format with: Ctrl + Shift + Enter
https://wn.com/Mr_Excel_Excelisfun_Trick_101_Sum_Numbers_From_Cells_That_Contain_Both_Text_Numbers
Challenge example: Sum of integers | Linear equations | Algebra I | Khan Academy

Challenge example: Sum of integers | Linear equations | Algebra I | Khan Academy

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  • Duration: 4:33
  • Updated: 11 Jun 2010
  • views: 228506
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Sum of Consecutive Odd Integers Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/solving-linear-equations-and-inequalities/More-equation-practice/e/integer_sums?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI Watch the next lesson: https://www.khanacademy.org/math/algebra/solving-linear-equations-and-inequalities/More-equation-practice/v/2003-aime-ii-problem-1?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI Missed the previous lesson? https://www.khanacademy.org/math/algebra/solving-linear-equations-and-inequalities/More-equation-practice/v/sum-consecutive-integers?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI Algebra I on Khan Academy: Algebra is the language through which we describe patterns. Think of it as a shorthand, of sorts. As opposed to having to do something over and over again, algebra gives you a simple way to express that repetitive process. It's also seen as a "gatekeeper" subject. Once you achieve an understanding of algebra, the higher-level math subjects become accessible to you. Without it, it's impossible to move forward. It's used by people with lots of different jobs, like carpentry, engineering, and fashion design. In these tutorials, we'll cover a lot of ground. Some of the topics include linear equations, linear inequalities, linear functions, systems of equations, factoring expressions, quadratic expressions, exponents, functions, and ratios. About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to Khan Academy’s Algebra channel: https://www.youtube.com/channel/UCYZrCV8PNENpJt36V0kd-4Q?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
https://wn.com/Challenge_Example_Sum_Of_Integers_|_Linear_Equations_|_Algebra_I_|_Khan_Academy
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