I have tried multiple substitutions and cannot get this homework problem right xD

everything in the denominator is under the square root

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- September 30th 2010, 06:37 PMhighc1157Integral :Complete the square and give a substitution (not necessarily trigonometric)
I have tried multiple substitutions and cannot get this homework problem right xD

everything in the denominator is under the square root - September 30th 2010, 07:11 PMskeeter
- September 30th 2010, 07:15 PMsa-ri-ga-ma
After completing the square in the squareroot sing, the problem becomes

Substitue (x-1)^2 = t and proceed. - September 30th 2010, 07:41 PMhighc1157
I did that substitution and got (x-2)(x-1), but not same as answer in the book.

I screwed up somewhere :( - September 30th 2010, 07:49 PMhighc1157
hmmm the book answer is :

I tried it again, and got :

I dont know where i messed up, simplified out everything and this is the integral that I take

cant fix the exponent, supposed to be (1-U)^(-1/2) - September 30th 2010, 07:59 PMskeeter

let

- September 30th 2010, 08:01 PMhighc1157
that is not the answer in the book :( , i think i posted the book answer above

- September 30th 2010, 08:06 PMskeeter
- September 30th 2010, 08:10 PMhighc1157
Hey Skeeter,

Thanks for you're time and help you put into this , very much appreciated :)

But as for your answer and my answer they are slightly different, but this isn't right, what I got?

oh wow you are right, The derivative of my solution does not equal the original equation !! grrrr lol - September 30th 2010, 08:17 PMskeeter