Inverse Functions: Evaluating Logs

Inverse Functions

To evaluate a logarithmic expression, convert to its corresponding exponential form and solve.

Example Evaluate

Step 1. Convert the log to its equivalent exponential form.

Step 2. Solve for x by rewriting 16 as a power with a base of 2.

Step 3. Substitute 2⁴ in for 16 in step 1.

Step 4. Now that the bases are equal, set the exponents equal to each other.