Manuals/calci/LN
LN(n)
- where is the positive real number.
Description
- This function gives the Natural Logarithm of a number.
- is the logarithm in which the base is the irrational number ( = 2.71828...).
- For example,
- Also called Napierian logarithm.
- The constant is called Euler's number.
- The Natural Logarithm is denoted by or .
- where is the Positive real number.
- The is the inverse function of the exponential function if .
Examples
- =LN(15) = 2.708050201
- =LN(8.3) = 2.116255515
- =LN(1) = 0
- =LN(0) = INFINITY
- =LN(-20) = NAN
- =LN(exp(5)) = 5
- =EXP(LN(7)) = 7