Question

How do you use the Change of Base Formula and a calculator to evaluate the logarithm `log_7 28`?

Answer 1

`log_(7)28=(log28)/(log7)=1,7124`

Explanation:

The change of base formula states that

`log_ab=(log_cb)/(log_ca)`

So therefore `log_(7)28=(log28)/(log7)=1,7124`