Question 973077
find the inverse function:
{{{f(x)=(1e^x-9)/(11e^x+6)}}}
{{{x=(e^y-9)/(11e^y+6)}}}
{{{(11(e^y)x+6x)=e^y-9)}}}
{{{(11(e^y)x-e^y)=(-9-6x)}}}
e^y(11x-1)=-9-6x
e^y=(-9-6x)/(11x-1)
ylne=ln(-9-6x)/ln(11x-1)
y=ln(-9-6x)/ln(11x-1)