The inverse error function: Let Z be a standard normally distributed random variable. Then inverf(p) is the value of z for which P(Z<z) = p

For example, inverf(0.99) returns the value of z with probability 0.99 that Z<z.

$\mathrm{MapleTA}:-\mathrm{Builtin}:-\mathrm{inverf}\left(0.65\right)$

$0.385320466407568$

The MapleTA[Builtin][inverf] command was introduced in Maple 18.

For more information on Maple 18 changes, see Updates in Maple 18.