## Lecture 18: Change of variables

Lecture 18: Change of variables
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Taught by OCW
Denis Auroux. 18.02 Multivariable Calculus, Fall 2007. (Massachusetts Institute of Technology: MIT OpenCourseWare). http://ocw.mit.edu (Accessed March 21, 2009). License: Creative Commons Attribution-Noncommercial-Share Alike.
Learn about the change of variables method for difficult integral calculations.
• How do you change variables in double integrals?
• How do you use u and v substitution with a double integral?
• How do you find the area scaling factor when changing from dxdy to dudv?
• What is the Jacobian of a change of variables and how do you find it?
• How do you find the double integral of x^2y dxdy from 0 to 1 for x and y using a change of variables?
• How do you find the new bounds when you change variables in a double integral?
Change of variables in double integrals is discussed. This can really simplify a double integral, but it has to be done carefully. This process is described very well with some great example problems. The Jacobian is also discussed and examples are shown. The strength of this lecture is its useful example problems that are computed.
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Reviewed by MathVids Staff on March 21, 2009.
Very good video. Excellent examples with ample explanation.
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Reviewed by gtg789w on April 23, 2009.
Very clear and thorough explanations.
• Currently 5.0/5 Stars.
Reviewed by yoleven on December 15, 2009.