Complex.Atan(Complex) 方法

定義

命名空間:

System.Numerics

組件:

netstandard.dll, System.Runtime.Numerics.dll

來源:

Complex.cs

回傳指定複數的弧切角。

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

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

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

Public Shared Function Atan (value As Complex) As Complex

參數

value

Complex

複數。

傳回

Complex

即為 的 value弧切角。

範例

以下範例說明此 Atan 方法。 它顯示將方法回傳 Atan 的值傳給方法 Tan 時，會返回原始 Complex 值。

using System;
using System.Numerics;

public class Example
{
   public static void Main()
   {
      Complex[] values = { new Complex(2.5, 1.5),
                           new Complex(2.5, -1.5),
                           new Complex(-2.5, 1.5),
                           new Complex(-2.5, -1.5) };
      foreach (Complex value in values)
         Console.WriteLine("Tan(Atan({0})) = {1}",
                            value, Complex.Tan(Complex.Atan(value)));
   }
}
// The example displays the following output:
//       Tan(Atan((2.5, 1.5))) = (2.5, 1.5)
//       Tan(Atan((2.5, -1.5))) = (2.5, -1.5)
//       Tan(Atan((-2.5, 1.5))) = (-2.5, 1.5)
//       Tan(Atan((-2.5, -1.5))) = (-2.5, -1.5)

open System.Numerics

let values =
    [ Complex(2.5, 1.5)
      Complex(2.5, -1.5)
      Complex(-2.5, 1.5)
      Complex(-2.5, -1.5) ]

for value in values do
    printfn $"Tan(Atan({value})) = {Complex.Atan value |> Complex.Tan}"
// The example displays the following output:
//       Tan(Atan((2.5, 1.5))) = (2.5, 1.5)
//       Tan(Atan((2.5, -1.5))) = (2.5, -1.5)
//       Tan(Atan((-2.5, 1.5))) = (-2.5, 1.5)
//       Tan(Atan((-2.5, -1.5))) = (-2.5, -1.5)

Imports System.Numerics

Module Example
   Public Sub Main()
      Dim values() As Complex = { New Complex(2.5, 1.5), 
                                  New Complex(2.5, -1.5), 
                                  New Complex(-2.5, 1.5), 
                                  New Complex(-2.5, -1.5) }
      For Each value As Complex In values
         Console.WriteLine("Tan(Atan({0})) = {1}", 
                            value, Complex.Tan(Complex.Atan(value)))
      Next                               
   End Sub
End Module
' The example displays the following example:
'       Tan(Atan((2.5, 1.5))) = (2.5, 1.5)
'       Tan(Atan((2.5, -1.5))) = (2.5, -1.5)
'       Tan(Atan((-2.5, 1.5))) = (-2.5, 1.5)
'       Tan(Atan((-2.5, -1.5))) = (-2.5, -1.5)

備註

Atan複數的方法對應Math.Atan於實數的方法。

此 Atan 方法使用以下公式：

(ImaginaryOne / new Complex(2.0, 0.0)) * (Log(One - ImaginaryOne * value) - Log(One + ImaginaryOne * value))

另請參閱

• Tan(Complex)
• Atan(Double)