Calculus (Substitution)...


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Calculus (Substitution)...



Help!  I have an integral that I can't work either forward or backward.

Here is the problem (S = integral sign):

S (e^x - 3)^(1/2) dx


The problem states that I have to use substitution, so:

u = e^x - 3
du = e^x dx
du / (e^x) = dx
du / (u + 3) = dx

S [u^(1/2) / (u + 3)] du

That is as far as I have gotten.  If someone could please help me finish
this problem I would be very grateful.  My dad's own calculus books don't
help with this problem either.  TIA


                 Thomas J. Hruska -- thruska@tir.com
Shining Light Productions -- "Meeting the needs of fellow programmers"
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