LOG1000 Alternatively the LOG10 Function can also be used. In mathematics ln is an inverse of an exponential function. Taking the natural log of a negative number is Excel.
EXP is the inverse of LN the natural logarithm of number.
The LOG formula will be. To learn more click here. How much growth do I get after after x units of time and 100 continuous growth For example. So the natural log of a value x would be written as ln x.