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January 25, 2015

January 25, 2015

Posted by **JB** on Tuesday, January 3, 2012 at 9:13pm.

f(x)=6/(1-x)

g(x)=(1-6/x)

- College Algebra -
**Steve**, Wednesday, January 4, 2012 at 10:39amwhat's the problem? Just plug and chug:

f(g) = ln(g-1) = ln(1+e^x-1) = ln(e^x) = x

g(f) = 1+e^f = 1 + e^(ln (x-1)) = 1 + x-1 = x

Just keep in mind the definition of a logarithm:

e^lnx = x

ln e^x = x

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