Hello! I have some sympy expressions of the form: c0*cos(c1*y) + c2 + c3*x**2 I want to  turn the parameters c0, c1, c2, c3 to trainable pytorch parameters and run gradient descent on them (as I would do with an actual NN), to fit them to some data of the form (x,y,z). Is there a way to do this? Thank you!