FourierSinCoefficient

FourierSinCoefficient[expr, t, n] gives the nth coefficient in the Fourier sine series expansion of expr.

• FourierSinCoefficient[expr, {t1, t2, ...}, {n1, n2, ...}] gives a multidimensional Fourier sine coefficient.

Examples

Compute the Fourier sine coefficient:

FourierSinCoefficient[Sin[3 t], t, 3]

Get coefficients for a sawtooth wave:

FourierSinCoefficient[t, t, n]

Please visit the official Wolfram Language Reference for more details.