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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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