Complex.Log Metode

Definisi

Ruang nama:

System.Numerics

Rakitan:

System.Runtime.Numerics.dll

Mengembalikan logaritma bilangan kompleks.

Overload

Log(Complex)	Mengembalikan logaritma natural (dasar e) dari bilangan kompleks tertentu.
Log(Complex, Double)	Mengembalikan logaritma bilangan kompleks tertentu dalam basis tertentu.

Log(Complex)

Sumber:

Complex.cs

Mengembalikan logaritma natural (dasar e) dari bilangan kompleks tertentu.

public:
 static System::Numerics::Complex Log(System::Numerics::Complex value);

public static System.Numerics.Complex Log (System.Numerics.Complex value);

static member Log : System.Numerics.Complex -> System.Numerics.Complex

Public Shared Function Log (value As Complex) As Complex

Parameter

value

Complex

Bilangan kompleks.

Mengembalikan

Complex

Logaritma alami (dasar e) dari value.

Contoh

Contoh berikut mengilustrasikan Log metode . Ini menunjukkan bahwa, dengan beberapa tunjangan untuk kurangnya presisi Double jenis data, meneruskan nilai yang dikembalikan oleh Log metode ke Exp metode mengembalikan nilai asli Complex .

using System;
using System.Numerics;

public class Example
{
   public static void Main()
   {
      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)
         Console.WriteLine("Exp(Log({0}) = {1}", value, 
                           Complex.Exp(Complex.Log(value)));
   }
}
// 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)

open System
open System.Numerics

let values =
    [ Complex(1.53, 9.26)
      Complex(2.53, -8.12)
      Complex(-2.81, 5.32)
      Complex(-1.09, -3.43)
      Complex(Double.MinValue / 2.0, Double.MinValue / 2.0) ]

for value in values do
    printfn $"Exp(Log({value}) = {Complex.Exp(Complex.Log(value))}"
// 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)

Imports System.Numerics

Module Example
   Public Sub Main()
      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
         Console.WriteLine("Exp(Log({0}) = {1}", value, 
                           Complex.Exp(Complex.Log(value)))
      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)

Keterangan

Metode Log(Complex) untuk bilangan Math.Log(Double) kompleks sesuai dengan metode untuk angka riil.

Lihat juga

• Log(Double)
• Exp(Complex)

Log(Complex, Double)

Sumber:

Complex.cs

Mengembalikan logaritma bilangan kompleks tertentu dalam basis tertentu.

public:
 static System::Numerics::Complex Log(System::Numerics::Complex value, double baseValue);

public static System.Numerics.Complex Log (System.Numerics.Complex value, double baseValue);

static member Log : System.Numerics.Complex * double -> System.Numerics.Complex

Public Shared Function Log (value As Complex, baseValue As Double) As Complex

Parameter

value

Complex

Bilangan kompleks.

baseValue

Double

Dasar logaritma.

Mengembalikan

Complex

Logaritma dalam value basis baseValue.

Keterangan

Metode Log(Complex, Double) untuk bilangan Math.Log(Double, Double) kompleks sesuai dengan metode untuk angka riil.