Practice!

Sample Problem

Rewrite log(1/10000)=-4 in exponential form.

Solution

y=logax and x=ay are equivalent. Also, when there is no base specifically written, we can assume that log is base 10 (also called the common logarithmic function, denoted as simply log).

Therefore, -4=log(10)(1/10000) and 1/10000=10-4 are equivalent.