The exp() function in C++ returns the exponential (Euler’s number) e (or 2.71828) raised to the given argument.
Syntax for returning exponential e:
The function can take any value i.e, positive, negative or zero in its parameter and returns result in int, double or float or long double.
The exp() function returns the value in the range of [0, inf].
It shows error when we pass more then one argument in exp function
Given below is an example of application of exp() function
exp(x) = 22026.5
Applications of e (mathematical constant):
- Compound Interest : An account that starts at $1 and offers an annual interest rate of R will, after t years, yield eRt dollars with continuous compounding (Here R is the decimal equivalent of the rate of interest expressed as a percentage, so for 5% interest, R = 5/100 = 0.05)
- Value of below expression is e.
- The probability that a gambler never wins if he/she tries million times in a game where chances of winning in every trial is one by million is close to 1/e.
- The number e is the sum of the infinite series
Source : Wiki