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The Java Math exp() method returns e raised to the power of specified number, i.e., ex. Please note that e is the base of the natural system of logarithms, and its value is approximately 2.718282. In special cases it returns the following:

  • If the argument is NaN, the result is NaN.
  • If the argument is positive infinity, then the result is positive infinity.
  • If the argument is negative infinity, then the result is positive zero.

Syntax

public static double exp(double x)   

Parameters

x Specify the exponent of e.

Return Value

Returns e raised to the power of specified number.

Exception

NA.

Example:

In the below example, exp() method is used to calculate e raised to the power of specified number.

public class MyClass {
 public static void main(String[] args) {
  System.out.println(Math.exp(2)); 
  System.out.println(Math.exp(-2)); 
  System.out.println(Math.exp(1.5)); 
  System.out.println(Math.exp(-1.5));    
 }
}

The output of the above code will be:

7.38905609893065
0.1353352832366127
4.4816890703380645
0.22313016014842982

❮ Java Math Methods