Changes

*It is called the Mathematical Constant or Euler's Number or Napier's Constant.  

*It is called the Mathematical Constant or Euler's Number or Napier's Constant.  

*It is the base of natural logarithm.

*It is the base of natural logarithm.

*It can be calculate the sum of infinite series: <math>e=1+(1/1)+(1/1.2)+(1/1.2.3)+(1/1.2.3.4) +...</math>

*It can be calculate the sum of infinite series: <math>e=1+\frac{1}{1}+\frac{1}{1.2}+\frac{1}{1.2.3}+\frac{1}{1.2.3.4} +...</math>

*And the inverse function of the natural logarithm function is the exponential function:

*And the inverse function of the natural logarithm function is the exponential function:

<math>f^{-1}(x) = e^x</math>.

<math>f^{-1}(x) = e^x</math>.