Number Sets, Part 1 of 3
Using the question 'What number sets does the number 8 belong to?', the Mr. Khan explains the categories that numbers can belong to. Mr. Khan uses the Paint Program (with different colors) to illustrate his points. Sal Khan is the recipient of the 2009 Microsoft Tech Award in Education. (06:06)
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Number Sets, Part 2 of 3
Using the question 'What number sets does the number 3.4028 (with the 28 at the end of the number repeating forever) belong to?', Mr. Khan explains the categories that numbers can belong to. Mr. Khan uses the Paint Program (with different colors) to illustrate his points. Sal Khan is the recipient of the 2009 Microsoft Tech Award in Education. (06:52)
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Number Sets, Part 3 of 3
Using the question 'If x is a whole number, what other sets does x belong to?'. Mr. Khan uses the Paint Program (with different colors) to illustrate his points. Sal Khan is the recipient of the 2009 Microsoft Tech Award in Education. (02:52)
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This instructor in this video, Sal Khan, discusses the discriminant of quadratic equations. Mr. Khan uses computer software (with different colors) to illustrate his points. Sal Khan is the recipient of the 2009 Microsoft Tech Award in Education. The viewer may want to open the video to 'full screen' as the instructor fits a lot of information on a dark screen.
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This instructor in this video, Sal Khan, in an understandable manner, discusses how to prove a quadratic formula. Mr. Khan uses computer software (with different colors) to illustrate his points. Sal Khan is the recipient of the 2009 Microsoft Tech Award in Education. The viewer may want to open the video to 'full screen' as the instructor fits a lot of information on a dark screen.
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This instructor in this video, Sal Khan, explains the quadratic formula. Mr. Khan uses computer software (with different colors) to illustrate his points. Sal Khan is the recipient of the 2009 Microsoft Tech Award in Education. The viewer may want to open the video to 'full screen' as the instructor fits a lot of information on a dark screen.
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The insructor uses y=x^2 to give a sense of why the change in the change of y (or the change in the slope) is constant. This instructor in this video, Sal Khan, explains quadratic models. Mr. Khan uses computer software (with different colors) to illustrate his points. Sal Khan is the recipient of the 2009 Microsoft Tech Award in Education. The viewer may want to open the video to 'full screen' as the instructor fits a lot of information on a dark screen.
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This instructor in this video, Sal Khan, shows examples of graphing quadratic functions. Mr. Khan uses computer software (with different colors) to illustrate his points. Sal Khan is the recipient of the 2009 Microsoft Tech Award in Education. The viewer may want to open the video to 'full screen' as the instructor fits a lot of information on a dark screen.
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Solving Quadratic Equations by Completing the Square
This instructor in this video, Sal Khan, explains how to solve quadratic equations by completing the square. Mr. Khan uses computer software (with different colors) to illustrate his points. Sal Khan is the recipient of the 2009 Microsoft Tech Award in Education. The viewer may want to open the video to 'full screen' as the instructor fits a lot of information on a dark screen
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Factoring Special Products
This instructor in this video, Sal Khan, discusses how to factor special products.  Mr. Khan uses the Paint Program (with different colors) to illustrate his points. Sal Khan is the recipient of the 2009 Microsoft Tech Award in Education. The student or educator may want to open the video to 'full screen' as the instructor is using a black background and the writing is small.
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Sum of Consecutive Odd Integers (How to Solve)
In this video, Sal Khan demonstrates how to solve for x using a single problem.  Mr. Khan uses the Paint Program (with different colors) to illustrate his points. Sal Khan is the recipient of the 2009 Microsoft Tech Award in Education.  (04:33) There is a lot of information on the screen--the viewer may want to open the video to 'full screen.'
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The instructor in this video, Sal Khan, uses a graphing calculator to solve quadratic equations. Mr. Khan uses computer software (with different colors) to illustrate his points. Sal Khan is the recipient of the 2009 Microsoft Tech Award in Education. The viewer may want to open the video to 'full screen' as the instructor fits a lot of information on a dark screen.
Author(s): No creator set

Introduction to Function Inverses
Introduction to Function Inverses. Mr. Khan uses the Paint Program (with different colors) to illustrate his points. Sal Khan is the recipient of the 2009 Microsoft Tech Award in Education. The screen gets busy (and dark)--the viewer may want to open to 'full screen' to see everything. The sound is a little low. (09:05)
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Function Inverse Example 1
Function Inverse Example 1: f(x)= -x+4
This is a continuation of Mr. Khan's Introduction to Function Inverses. Mr. Khan uses the Paint Program (with different colors) to illustrate his points. Sal Khan is the recipient of the 2009 Microsoft Tech Award in Education. The screen gets busy (and dark)--the viewer may want to open to 'full screen' to see everything. The sound is a little low. (06:43)

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Function Inverses Example 2
Function Inverse Example 2: f(x)= (x + 2) squared +1
This is a another installment of Mr. Khan's short 4-part series on Function Inverses. Mr. Khan uses the Paint Program (with different colors) to illustrate his points. Sal Khan is the recipient of the 2009 Microsoft Tech Award in Education. The screen gets busy (and dark)--the viewer may want to open to 'full screen' to see everything. The sound is a little low. (07:12)

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Function Inverses, Example 3
Function Inverse Example 3: f(x)= (x - 1) squared -2
This is the last segment of Mr. Khan's short 4-part series on Function Inverses. These installments started with Khan's Introduction to Function Inverses. Mr. Khan uses the Paint Program (with different colors) to illustrate his points. Sal Khan is the recipient of the 2009 Microsoft Tech Award in Education. The screen gets busy (and dark)--the viewer may want to open to 'full screen' to see everything. The sound is a l

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Calculus - Introduction to Limits
In his easy, conversational tone, Mr. Khan offers an introduction to the intuition behind limits. Mr. Khan uses the Paint Program (with different colors) to illustrate his points. Sal Khan is the recipient of the 2009 Microsoft Tech Award in Education. (07:37)
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Limit Examples (Part 1 of 4)
In this nine-minute video, Mr. Khan offers some limit exercises. Mr. Khan uses the Paint Program (with different colors on a black screen) to illustrate his points. Sal Khan is the recipient of the 2009 Microsoft Tech Award in Education. (07:37)
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Limit Examples (Part 2 of 4)
In this seven-minute video, Mr. Khan offers more limit exercises. Mr. Khan uses the Paint Program (with different colors on a black screen) to illustrate his points. Sal Khan is the recipient of the 2009 Microsoft Tech Award in Education. (06:57)
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Limit Examples (Part 3 of 4)
In this ten-minute video, Mr. Khan offers even more limit exercises. Mr. Khan uses the Paint Program (with different colors on a black screen) to illustrate his points. Sal Khan is the recipient of the 2009 Microsoft Tech Award in Education.
Author(s): No creator set