- Thread starter mindshift
- Start date

We have: . ∫ x(4 - x<sup>2</sup>)<sup>1/2</sup> dx∫√(4x<sup>2</sup> - x<sup>4</sup>) dx ... from 0 to 2

Then let u = 4 - x<sup>2</sup>

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- Apr 12, 2005

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If u = 4-x<sup>2</sup>,

Then du = -2*x*dx.

This should answer your question entirely.

If it doesn't entirely clear up your question, you require additional review in the method and should stop, back up, go review the section in your book, and give it another go.