C# | Math.Exp() Method

Last Updated : 01 Feb, 2019

In C#, Exp() is a Math class method which is used to return the e raised to the specified power. Here e is a mathematical constant whose value is approximately 2.71828. Exp() is the inverse of Log().

Syntax:

public static double Exp (double num);

Parameter:

num: It is the required number of type System.Double which specifies a power.

Return Type: It returns a number e raised to the power num of type System.Double.

Note:

If num is equal to NaN then the return value will be NaN.
If num is equal to PositiveInfinity then the return value will be Infinity.
If num is equal to NegativeInfinity then the return value will be 0.

Example 1:

// C# Program to illustrate the
// Math.Exp(Double) Method
using System;
   
class Geeks {
   
    // Main Method
    public static void Main()
    {
   
        // using the method
        Console.WriteLine(Math.Exp(10.0));
        Console.WriteLine(Math.Exp(15.57));
        Console.WriteLine(Math.Exp(529.548));
        Console.WriteLine(Math.Exp(0.00));
    }
}

Output:

22026.4657948067
5780495.71030692
9.54496417945595E+229
1

Example 2:

// C# Program to illustrate the
// Math.Exp(Double) Method by 
// taking NaN, PositiveInfinity
// and NegativeInfinity]
using System;
   
class Geeks {
   
    // Main Method
    public static void Main()
    {
   
        // Taking NaN
        Console.WriteLine(Math.Exp(Double.NaN));
          
        // Taking PositiveInfinity
        Console.WriteLine(Math.Exp(Double.PositiveInfinity));
          
        // Taking NegativeInfinity
        Console.WriteLine(Math.Exp(Double.NegativeInfinity));
    }
}

Output:

NaN
Infinity
0

Reference: https://docs.microsoft.com/en-us/dotnet/api/system.math.exp?view=netcore-2.1

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