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Topic: Difference of cubes - Example from ucdavis site
Replies: 1   Last Post: Dec 9, 2010 9:54 AM

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rnorman3

Posts: 4
Registered: 11/30/10
Difference of cubes - Example from ucdavis site
Posted: Dec 9, 2010 6:49 AM
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There's a limit example on the ucdavis site (Problem 7) which uses a difference of cubes to solve:

x^(1/3)-1
---------
x^(1/4)-1

The solution notes that x-1 = (x^(1/3))^3-1^3 which I agree. However how does this equal x^(1/3)-1 as they infer?


Link:
http://www.math.ucdavis.edu/~kouba/CalcOneDIRECTORY/limcondirectory/LimitConstant.html



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