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);
}
