SymPy Gamma logo SymPy Gamma

diff%28cot%28xy%29%2C%20y%29
diff%28cot%28xy%29%2C%20y%29
unsupported operand type(s) for %: 'function' and 'Integer'
See what Wolfram|Alpha has to say.

Experiment with SymPy at SymPy Live.