Question #5ce0c

1 Answer
May 20, 2017

See explanation.

Explanation:

To find the inverse function you can do the following:

  1. Write the formula of y=f(x).

  2. Transform it to calculate x as f(y)

The function you get in 2. is the inverse function.

Here we have:

y=2^x - 3

2^x=y+3

x=log_2(y+3)

Now we can change the letters x and y to get the function in the usual form with x as independent variable:

y=log_2(x+3)