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am i missing something simple here?

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ah of course the infamous half aangles

haha or that

sorry i learned it the hard way and it always stuck with me

its all good but its better in life to take easier route :P

when you can of course

ty again guys

wait a second i thought about it you cant use the u substitution

you only have the 1 trig ffunction at one time so you could have only done that

half angle formula

correct , "u-substitution won't work"
i used "integration by parts"

http://en.wikipedia.org/wiki/Integration_by_parts

ah i see i zoned out the dv part yep it would work

and i did integration by parts like 1 week ago

oh ok