IMCOS

Updated 2024-03-13 15:37:13.027000

Syntax

SELECT [westclintech].[wct].[IMCOS] (
   <@inumber, nvarchar(4000),>)

Description

Use the scalar function IMCOS to return the cosine of a complex number in x + yi or x + yj text format.

\cos(x+yi)=\cos(x)\cosh(y)-\sin(x)\cosh(y)i

Arguments

@inumber

is the value at which to evaluate the function. @inumber is an expression of type varchar or of a type that can be implicitly converted to varchar and must be in the format x + yi or x + yj, where x is a real number that can be converted to float and yi (or yj) is an imaginary number, where the y part can be converted to float.

Return Type

nvarchar(4000)

Remarks

Use COMPLEX to convert real and imaginary coefficients into a complex number.

Examples

select wct.IMCOS('7+24i');

This produces the following result.

{"columns":[{"field":"column 1"}],"rows":[{"column 1":"9985104444.63206-8701499125.56623i"}]}