Comment #2 on issue 2197 by [email protected]: differentiate in nested functions
http://code.google.com/p/sympy/issues/detail?id=2197
ok, your solution works in this case, but doesn't quite do whot i want, for example for Fz(z*L) it would give a wrong result
i found a workaround myself now
import sympy as sp sp.var("E,F,Er,El,k,z,L,dz") Ez = lambda z: Er*sp.exp(sp.I*k*z)+El*sp.exp(-sp.I*k*z) Fz = lambda z: (Ez(dz).diff(dz)).subs({dz:z})
but i was really looking for some way to force sympy to evaluate the function and only put this evaluated form in the new function, but i realize now that the original code can't work, the way i wrote it
maybe i sleep over the next problem a night, to avoid such posts :D -- You received this message because you are subscribed to the Google Groups "sympy-issues" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/sympy-issues?hl=en.
