Question

Why does ln1 equal 0?

Answer 1

Logarithms are powers of the base of the logs. If we consider logs to base 10, we find:
`log_(10) 1=0`
This is because

`10^(0)=1`
Similarly for natural logs, where the base is the exponential number e, we have

`e^(0)=1`
This ensures that we have no problems with expressions such as the following:

`ln\ ((60)/(1))=ln\ 60-ln\ 1=ln\ 60-0=ln\ 60`