Complex.Exp Method
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Returns e raised to the power specified by a complex number.
Namespace: System.Numerics
Assembly: System.Numerics (in System.Numerics.dll)
Syntax
'Declaration
Public Shared Function Exp ( _
value As Complex _
) As Complex
public static Complex Exp(
Complex value
)
Parameters
- value
Type: System.Numerics.Complex
A complex number that specifies a power.
Return Value
Type: System.Numerics.Complex
The number e raised to the power value.
Remarks
Use the Pow method to calculate the powers of other bases.
The Exp method for complex numbers corresponds to the Math.Exp method for real numbers. Exp is the inverse of Log.
Examples
The following example illustrates the Exp method. It shows that, with some allowance for the lack of precision of the Double data type, passing the value returned by the Log method to the Exp method returns the original Complex value.
Imports System.Numerics
Module Example
Public Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)
Dim values() As Complex = { New Complex(1.53, 9.26),
New Complex(2.53, -8.12),
New Complex(-2.81, 5.32),
New Complex(-1.09, -3.43),
New Complex(Double.MinValue/2, Double.MinValue/2) }
For Each value As Complex In values
outputBlock.Text += String.Format("Exp(Log({0}) = {1}", value,
Complex.Exp(Complex.Log(value))) + vbCrLf
Next
End Sub
End Module
' The example displays the following output:
' Exp(Log((1.53, 9.26)) = (1.53, 9.26)
' Exp(Log((2.53, -8.12)) = (2.53, -8.12)
' Exp(Log((-2.81, 5.32)) = (-2.81, 5.32)
' Exp(Log((-1.09, -3.43)) = (-1.09, -3.43)
' Exp(Log((-8.98846567431158E+307, -8.98846567431158E+307)) = (-8.98846567431161E+307, -8.98846567431161E+307)
using System;
using System.Numerics;
public class Example
{
public static void Demo(System.Windows.Controls.TextBlock outputBlock)
{
Complex[] values = { new Complex(1.53, 9.26),
new Complex(2.53, -8.12),
new Complex(-2.81, 5.32),
new Complex(-1.09, -3.43),
new Complex(Double.MinValue/2, Double.MinValue/2) };
foreach (Complex value in values)
outputBlock.Text += String.Format("Exp(Log({0}) = {1}", value,
Complex.Exp(Complex.Log(value))) + "\n";
}
}
// The example displays the following output:
// Exp(Log((1.53, 9.26)) = (1.53, 9.26)
// Exp(Log((2.53, -8.12)) = (2.53, -8.12)
// Exp(Log((-2.81, 5.32)) = (-2.81, 5.32)
// Exp(Log((-1.09, -3.43)) = (-1.09, -3.43)
// Exp(Log((-8.98846567431158E+307, -8.98846567431158E+307)) = (-8.98846567431161E+307, -8.98846567431161E+307)
Version Information
Silverlight
Supported in: 5, 4
Platforms
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.