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NFourierCosCoefficient
gives a numerical approximation to the n
coefficient in the Fourier cosine series expansion of expr, where expr is a periodic function of t with period 
.
更多信息
- To use
, you first need to load the Fourier Series Package using Needs["FourierSeries`"]. - The numerical approximation to the n
coefficient in the Fourier cosine series expansion of expr is by default defined to be 
NIntegrate[expr Cos[n t], {t, 0, 
}]. - Different choices for the definition of the Fourier cosine series expansion can be specified using the option FourierParameters.
- With the setting FourierParameters->{a, b}, expr is assumed to have a period of
, and the n
coefficient computed by 
is 
NIntegrate[expr Cos[b n t], {t, 0, 
}]. - The parameter b in the setting FourierParameters->{a, b} must be numeric.
- In addition to the option FourierParameters,
can also accept the options available to NIntegrate. These options are passed directly to NIntegrate.
