FORCOS

 

The FORCOS function returns the results of the coefficients and variables evaluated in a Fourier Cosine series.

 

Format

 

Arguments definition

The input variable for the defined Fourier Cosine series

•     Generally, this variable is time or a function that results in a real number.

The x-direction offset for the variable (x) in the Fourier Cosine series

The base frequency for the Fourier Cosine series (in radians)

The coefficient values in the Fourier cosine series that calculates the linear superposition in line with the Fourier cosine series

•     These values are defined by the number of input coefficients and can include up to 31 coefficients.

 

Formulation

 

Example

FORCOS(time, 0, 360D, 1, 2, 3)

•     x = time: Independent variable

•     x0 = 0: Shift in the Fourier cosine series

•     img4.gif= 360D: Frequency of the Fourier cosine series

•     c0, c1, c2: Define coefficient for the Fourier series

•    C0 = 1, c1 = 2, c2 = 3

 

Figure 1  Scope result using the FORCOS function