Complex.Acos(Complex) Metodo

Definizione

Restituisce l'angolo che costituisce l'arcocoseno del numero complesso specificato.Returns the angle that is the arc cosine of the specified complex number.

public:
 static System::Numerics::Complex Acos(System::Numerics::Complex value);
public static System.Numerics.Complex Acos (System.Numerics.Complex value);
static member Acos : System.Numerics.Complex -> System.Numerics.Complex
Public Shared Function Acos (value As Complex) As Complex

Parametri

value
Complex

Numero complesso che rappresenta un coseno.A complex number that represents a cosine.

Restituisce

Angolo espresso in radianti che costituisce l'arcocoseno di value.The angle, measured in radians, which is the arc cosine of value.

Esempi

Nell'esempio seguente viene illustrato il metodo Acos.The following example illustrates the Acos method. Indica che il passaggio del valore restituito dal metodo Acos al metodo Cos restituisce il valore di Complex originale.It shows that passing the value returned by the Acos method to the Cos method returns the original Complex value.

using System;
using System.Numerics;

public class Example
{
   public static void Main()
   {
      Complex[] values = { new Complex(.5, 2), 
                           new Complex(.5, -2),
                           new Complex(-.5, 2),
                           new Complex(-.3, -.8) };
      foreach (Complex value in values)
         Console.WriteLine("Cos(ACos({0})) = {1}", value, 
                           Complex.Cos(Complex.Acos(value)));
   }
}
// The example displays the following output:
//       Cos(ACos((0.5, 2))) = (0.5, 2)
//       Cos(ACos((0.5, -2))) = (0.5, -2)
//       Cos(ACos((-0.5, 2))) = (-0.5, 2)
//       Cos(ACos((-0.3, -0.8))) = (-0.3, -0.8)
Imports System.Numerics

Module Example
   Public Sub Main()
      Dim values() As Complex = { New Complex(.5, 2), 
                                  New Complex(.5, -2),
                                  New Complex(-.5, 2),
                                  New Complex(-.3, -.8) }
      For Each value As Complex In values
         Console.WriteLine("Cos(ACos({0})) = {1}", value, 
                           Complex.Cos(Complex.Acos(value)))
      Next
   End Sub
End Module
' The example displays the following output:
'       Cos(ACos((0.5, 2))) = (0.5, 2)
'       Cos(ACos((0.5, -2))) = (0.5, -2)
'       Cos(ACos((-0.5, 2))) = (-0.5, 2)
'       Cos(ACos((-0.3, -0.8))) = (-0.3, -0.8)

Commenti

Il metodo Acos per i numeri complessi corrisponde al metodo Math.Acos per i numeri reali.The Acos method for complex numbers corresponds to the Math.Acos method for real numbers.

Il metodo Acos utilizza la formula seguente:The Acos method uses the following formula:

(-ImaginaryOne) * Log(value + ImaginaryOne*Sqrt(One - value * value))(-ImaginaryOne) * Log(value + ImaginaryOne*Sqrt(One - value * value)))

Si applica a

Vedi anche