HyperGeom_1_1¶

HyperGeom_1_1(*args)¶

Hypergeometric function of type (1,1).

${}_1F_1(p_1, q_1, x) = \sum_{n=0}^{\infty} \left[ \prod_{k=0}^{n-1} \frac{(p_1 + k)}{(q_1 + k)} \right] \frac{x^n}{n!}$