Natural Logarithms...?

Question

Can someone explain the concept of Natural Logarithms? What are they, what they are used for, how to use them, when do you know that you will need to use them? Thanks :)

Answer 1

Natural logarithm (ln) is the inverse of the exponential function of base e. This says that e^(ln(x)) = x and ln(e^x) = x. You use logarithms in general to find an exponent of some function with a known base.

Answer 2

Natural logarithm have a base number written as "e" which is an irrational number whose first figures are 2.7128128...
This number appears very very often in calculus where you will need to use them