i wish i could find a solution for that poblem(adsbygoogle = window.adsbygoogle || []).push({});

it is about inverse function:

Show that the function has an inverse function, and find [(d/dx)f^-1(x))] x=a for the given number a

f(x)=e^3x + 2e^x - 5 , x>=0 , a=-2

Here i proved that the function has an inverse by finding f'(x), and found that it is increasing at the given interval.

then f(x)= -2 to find "x", and then substitute in the theory:

g(a)=1/[f'(g(a))]

the problem here is that i can't find "x"

where, e^3x + 2e^x - 3 = 0

please i need help, any efforts will be appreciated

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# Hi again, here is my problem and my efforts

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