Introduction
One of the famous irrational number in mathematics is the number e which has a value: e= 2.71828 18284 59045 23536 02874 71352 66249 77572 47093 69995 The number e was named by the Swiss-German mathematician, Leonhard Euler, in 17th century. It is frequently called Euler's number after his name; however, the letter e stands for the word exponential. The number e is the base of the natural logarithms that is created by John Napier. In the year 1737, Euler employed the symbol for pi to denote the ratio of the circumference to the diameter within a circle. Then, in ...
