I solved an integral using trig sub

the answer I got was

I checked my answer on wolfram it gave

I understand the 3 and sqrt{x^2-9}. My problems is, shouldn't it be ?

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- February 6th 2014, 09:34 PMJonroberts74trig sub [trig question]
I solved an integral using trig sub

the answer I got was

I checked my answer on wolfram it gave

I understand the 3 and sqrt{x^2-9}. My problems is, shouldn't it be ? - February 7th 2014, 07:05 AMromsekRe: trig sub [trig question]
- February 7th 2014, 09:26 AMJonroberts74Re: trig sub [trig question]

I know my answer is correct, I just want to know how wolfram got instead of - February 7th 2014, 10:14 AMTclackRe: trig sub [trig question]
Wow, I'm having the exact same problem. I posted this last night:

http://mathhelpforum.com/calculus/22...-my-error.html

I'll follow your post and you can follow mine. Maybe we'll double our chances of getting the correction.