## sinh

Hiperbolic sine by tau approximation for rtau object.

Hiperbolic sine by tau approximation for rtau object.

f = sinh(r)

F = sinh(r) is a function to approximate by tau method sinh(r), r in [a, b]. We are using schursolver function, which will decide the approximation degree to achieve 1e-16.

r = rigth member in tau method (rtau object).

f = coefficients of sinh(r).

sin, cos, cosh, exp and log.