please help! any tips or help would be awesome. ive gotten through part of the problem, but get lost.
Last edited by claymation14; Jan 26th 2009 at 08:43 AM.
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You're looking good, except you did not square your 3 in the radical after you made the sub.
Then, it simplifies to:
Originally Posted by galactus Then, it simplifies to:
2 One question, how did you get from 1 to 2, I understand that , but what happens to the radical and the denominator?
Obviously, the square root of tan^2(t) gives tan(t).
The denominator cancels with the 3sec(t) in the dt
Well, you don't actually need any sort of trig. identity, so put and you'll turn your integral into an arctangent.
Yes, of course, but perhaps the poster is required to use trig sub. That was my impression anyway.
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