Practice: Finding the Inverse of a Function

Practice: Finding the Inverse of a Function

Find the inverse f1f^{-1} of the function f(x)=2e3x+1f\left(x\right)=2-e^{3x+1}, and determine its domain.

a. f1(x)=ln(3x1)2f^{-1}\left(x\right)=\ln\left(3x-1\right)-2; domain of f1f^{-1} is (13,)\left(\frac{1}{3},\infty\right)
b. f1(x)=ln(x2)13f^{-1}\left(x\right)=\frac{\ln\left(x-2\right)-1}{3}; domain of f1f^{-1} is (2,)\left(2,\infty\right)
c. f1(x)=ln(2x)13f^{-1}\left(x\right)=\frac{\ln\left(2-x\right)-1}{3}; domain of f1f^{-1} is (,2)\left(-\infty,2\right)
d. f1(x)=3ln(2x)3f^{-1}\left(x\right)=3\ln\left(\frac{2}{x}\right)-3; domain of f1f^{-1} is (0,)\left(0,\infty\right)
e. None of the above

More Logarithmic Functions Questions: