# FORSIN

The FORSIN function evaluates a Fourier sine series at a specific value $x$.

## Format

$\text{Forsin}\left(x,{x}_{0},\omega ,{c}_{0},{c}_{1},\cdots ,{c}_{30}\right)$

## Arguments

$x$
The independent variable. For example, to specify time as the independent variable, specify $x$ as TIME.
${x}_{0}$
The shift in the Fourier sine series.
$\omega$
The fundamental frequency of the Fouries series. It is assumed to be specified in radians per unit of $x$ unless a D is used after the value.
${c}_{0}$
The constant bias term.
${c}_{1},{c}_{2},\cdots ,{c}_{30}$
The coefficients for the Fourier Sine series.

(1)

## Example

<Post_Request
comment             = "WM-WDTM-HAVSIN-FORSIN-DIM-ACOS"
id                  = "3"
type                = "EXPRESSION"
expr1               = "NULL"
expr2               = "WM(30102010)"
expr3               = "WDTM(30102010)"
expr4               = "HAVSIN(TIME,1.,0.,4.,1.)"
expr5               = "NULL"
expr6               = "FORSIN(TIME,0.1,6.28,0.1,0.2)"
expr7               = "DIM(TIME,1.0)"
expr8               = "ACOS(COS(TIME))"
/>