Find the inverse, f −1 (x), for the following functions. Homework Help ✎
f(x) = 2x
f(x) = log3 x
f(x) = 1oge x
f(x) = 5 · 9 x
Solve for x: log2y = x
Then 'switch' the input and the output.
f −1(x) = log2x
This is the reverse of part (a).
Recall that e is a constant. (It's value is between 2 and 3)
f −1(x) = ex
Be sure to divide both sides by 5 before you solve for x .