>> syms f(x)
>> syms y
>> limit(diff(f),y)
error: Python exception: NotImplementedError: Don't know how to calculate the mrv of 'Subs(Derivative(f(_p), _p), _p, y + 1/_p)'
occurred at line 10 of the Python code block:
return _op(*_ins)
error: called from
pycall_sympy__ at line 179 column 7
elementwise_op at line 102 column 5
limit at line 92 column 5
If limit approaches a constant, it is fine
>> limit(diff(f),0)
ans = (sym)
/ d \|
|---(f(xi))||
\dxi /|xi=0
If limit approaches a constant, it is fine