Complex.Atan(Complex) 方法
定义
重要
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返回指定复数的反正切值的角度。
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.ComplexPublic Shared Function Atan (value As Complex) As Complex参数
- value
- Complex
复数。
返回
角度是 value的反正切值。
示例
以下示例演示了 Atan 方法。 它显示，将 Atan 方法返回的值传递给 Tan 方法将返回原始 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)
注解
复数 Atan 方法对应于实数的 Math.Atan 方法。
Atan 方法使用以下公式：
(ImaginaryOne / new Complex(2.0, 0.0)) * (Log(One - ImaginaryOne * value) - Log(One + ImaginaryOne * value))
