18/12/2008, 06:10 AM
Assassinator Wrote:Slushba132 Wrote:solve for "a"...
or at least find x, y, h and k in terms of a
so
a = ""
50 e-pigs for the person who does it correctly
You mean... find a in terms of x, y, h and k... right?
Heh, way too easy.
osnap1584 Wrote:Anyone want to find the integral of (x+5)/[(x-1)(x+2)] ?
Harder than Slushie's one. But pretty trivial if you know what you're doing.
Use partial fraction decomposition.
∫(x+5)/[(x-1)(x+2)]= ∫[A/(x-1)+B/(x+2)]
Ax+2A+Bx-B = x+5
=> A=2, B=-1.
∫(x+5)/[(x-1)(x+2)]
=∫[2/(x-1)-1/(x+2)]
=2ln(x-1)-ln(x+2)+C.
Edit: Stupid typo. Wrote "+" instead of "-".
wait..WHAT!!!