The simplify/hypergeom function is used to simplify expressions which contain hypergeometric functions.

Calling simplify invokes this function if the input contains hypergeometrics.

$\mathrm{simplify}\left(\mathrm{hypergeom}\left(\left[-1\right]\,\left[1\right]\,z\right)\,\mathrm{hypergeom}\right)$

$1-z$

$\mathrm{simplify}\left(\mathrm{hypergeom}\left(\left[\right]\,\left[3\right]\,\ln \left(z\right)\right)\,\mathrm{hypergeom}\right)$

$\frac{2\mathrm{BesselI}\left(2\,2\sqrt{\ln \left(z\right)}\right)}{\ln \left(z\right)}$

$\mathrm{simplify}\left(\mathrm{WhittakerW}\left(\frac{7}{3}\,1\,\mathrm{hypergeom}\left(\left[1\right]\,\left[2\right]\,z\right)\right)\,\mathrm{hypergeom}\right)$

$\mathrm{WhittakerW}\left(\frac{7}{3}\,1\,\frac{{\ⅇ}^z-1}{z}\right)$