Question

How do you evaluate `log 100`?

Answer 1

`log(100) = 2`

Explanation:

In this section (inverse of exponential functions) the way to describe it is as the number that as an exponent of 10 would result in the value of 100.
E.g. `10^2 = 100`

Without a calculator the original expression `10^x = 100` would need to be solved with a logarithm table. In this particular case we can use the known relationship to see that any multiple of 10 would be a whole number.

I.e. `log(1) = 0`
`log(10) = 1`
`log(100) = 2`
`log(1000) = 3`
`log(10000) = 4`
`log(100000) = 5`