FourierSinSeries

FourierSinSeries[expr, t, n] gives the nth-order Fourier sine series expansion of expr in t.

• FourierSinSeries[expr, {t1, t2, ...}, {n1, n2, ...}] gives the multidimensional Fourier sine series of expr.

Examples

Compute a Fourier sine series:

FourierSinSeries[t, t, 5]

Expand a function as a sine series:

FourierSinSeries[t (Pi - t), t, 3]

Please visit the official Wolfram Language Reference for more details.