MathieuS

MathieuS[a, q, z] gives the odd Mathieu function with characteristic value a and parameter q.

Examples

Compute Mathieu S function:

MathieuS[1, 0.5, Pi/4]

Plot the function:

Plot[MathieuS[1, 2, z], {z, 0, 2 Pi}]

Please visit the official Wolfram Language Reference for more details.