Trigonometric substitution for integrals

• Aug 5th 2009, 10:55 PM
Jonny-123
Trigonometric substitution for integrals
i need help with the question:

Evaluate the following integral using a trigonometric substitution.

int[dx/(x^2-1)^(3/2)], x>1

any help would be appreciated, thanks.
• Aug 5th 2009, 11:01 PM
o_O
Trigonometric Substitution

Does your integrand contain any of the forms given in the wiki entry? Yes. $x^2 - a^2$.

What trig substitution should you use? $x = \cdots$
• Aug 6th 2009, 12:48 AM
Jonny-123
oh ok so the substution is x=secx