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October 20, 2014

October 20, 2014

Posted by **Jo** on Wednesday, January 18, 2012 at 2:58am.

f(x)=2ln(3-x)+6

- College Algebra -
**drwls**, Wednesday, January 18, 2012 at 7:53amWe don't do graphs here

- College Algebra -
**Steve**, Wednesday, January 18, 2012 at 10:38amHowever, the inverse is easily found:

If y = f(x), x = f^{-1}(y)

y = 2ln(3-x)+6

y-6 = 2ln(3-x)

(y-6)/2 = ln(3-x)

e^[(y-6)/2] = 3-x

x = 3 - e^[(y-6)/2] = f^{-1}(y)

So, f^{-1}(x) = 3 - e^[(x-6)/2]

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