Mathematically the natural log of a number x is written as. In mathematics the logarithm is the inverse function to exponentiationThat means the logarithm of a given number x is the exponent to which another fixed number the base b must be raised to produce that number xIn the simplest case the logarithm counts the number of occurrences of the same factor in repeated multiplication. Definition and Usage The mathlog method returns the natural logarithm of a number or the logarithm of number to base.
Mathematically the natural log of a number x is written as.
Log e x ln x where the natural log or ln is the inverse of e. In this definition y logbx y log b x is called the logarithm form and by x b y x is called the exponential form. Base e Another base that is often used is e Eulers Number which is about 271828. Evaluate logarithmic identities that are functions of two arguments.