public Function B(Function psi, Variable r, Variable th) { return ((1 / (Function.Pow(r, 2) * Function.Sin(th))) * (psi.Derivative(th, 1) * this.E(psi, r, th).Derivative(r, 1) - psi.Derivative(r, 1) * this.E(psi, r, th).Derivative(th, 1)) + (1 / (Function.Pow(r, 2) * Function.Sin(th))) * (2 * Common.Cot(th) * psi.Derivative(r, 1) - 2 / r * psi.Derivative(th))) * this.E(psi, r, th); }
public Function E(Function psi, Variable r, Variable th) { return psi.Derivative(r, 2) + Function.Sin(th) / Function.Pow(r, 2) * (1 / Function.Sin(th) * psi.Derivative(th, 1)).Derivative(th, 1); }