The Logarithm
If raising something to a power means making a base multiply itself exponent times, the logarithm is the inverse of this.
Let's suppose that we have the square of 3:
So, what is the base-3 logarithm of 9?
The general definition of the logarithm is:
A special case of the exponential and logarithmic functions is important to learn:
Euler's Number, The Exponential, The natural logarithm