(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

http://img5.imageshack.us/img5/2327/nummer1.jpg [Broken]

2. Relevant equations

5a: ln((x*(x-2))/(x^{2}-4))

ln((x^{2}2x)/(x^{2}-4))

ln(x/(x+2)) <-- the answer (i think)

3. The attempt at a solution

Im not completly sure about that answer in 5a so could somebody check that? also I'am having truble with b:

f(x)--> y=ln(x/(x+2))

f^{-1}(x)--> x=ln(y/(y+2))

e^{x}=y/(y+2)

then i get in truble...

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# The Inverse of ln

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