SpecFunc_HyperGeom_2_1

SpecFunc_HyperGeom_2_1(p1, p2, q1, x)

Hypergeometric function of type (2,1).

{}_2F_1(p_1, p_2, q_1, x) = \sum_{n=0}^{\infty}
                            \left[
                            \prod_{k=0}^{n-1} \frac{(p_1 + k)(p_2 + k)}{(q_1 + k)}
                            \right] \frac{x^n}{n!}

Parameters:p1, p2, q1, x : float
Returns:result : float