# How do you use the Change of Base Formula and a calculator to evaluate the logarithm #log_3 73#?

##### 1 Answer

Jul 9, 2015

#### Answer:

#### Explanation:

The Change of Base Formula says that:

Calculators don't have

1) Calculate

2) Put the result in memory (button "X->M" or simmilar)

3) Calculate

4) Press divide button

5) Recall memory result (button "RM" or simmilar)

6) Press result (=) button.

Note: Using "ln" instead of "log" is also possible.