Function: mfderiv
Section: modular_forms
C-Name: mfderiv
Prototype: GD1,L,
Help: mfderiv(F,{m=1}): m-th formal derivative of the power series
corresponding to the generalized modular form F, with respect to the
differential operator q.d/dq (default m=1).
Doc: $m$-th formal derivative of the power series corresponding to
the generalized modular form $F$, with respect to the differential operator
$qd/dq$ (default $m=1$).
\bprog
? D=mfDelta();
? mfcoefs(D, 4)
%2 = [0, 1, -24, 252, -1472]
? mfcoefs(mfderiv(D), 4)
%3 = [0, 1, -48, 756, -5888]
@eprog