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#1 2007-03-18 14:15:52

riverjib
Member
Registered: 2007-03-18
Posts: 1

Trigonometric substitution...please help!

Can somebody help me with this?

int(16+x^2)^-3/2

I'm pretty sure the best way to start is with the substitution x=atan@ where x=4, but I'm not sure what to do with the fact that (16+x^2) is cubed underneath the radical...we haven't had any problems yet that weren't straightforward.

Thanks!

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#2 2007-03-18 15:37:32

JaneFairfax
Member
Registered: 2007-02-23
Posts: 6,868

Re: Trigonometric substitution...please help!

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#3 2007-03-18 17:12:10

Stanley_Marsh
Member
Registered: 2006-12-13
Posts: 345

Re: Trigonometric substitution...please help!

Outstanding calculation...omg..

Last edited by Stanley_Marsh (2007-03-18 17:12:28)


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