- #1
KevinL
- 37
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Homework Statement
Integral of 1/[(x^2+4x+3)^(3/2)]
The Attempt at a Solution
I tried completing the square and then using trig substitution. So its:
1/[(x+2)^2 -1] let x+2=sec(theta), dx =sec(theta)tan(theta)
After some simplifying, I get it down to integral of csc(theta) which = -ln|csc(theta) + cot(theta)|
My calc teacher has the answers online, and it doesn't have any ln in it at all, so I am pretty sure I am on the wrong track here. Any suggestions?