inverse of the cumulative distribution for the T-statistic,
where p is a real or double-precision matrix specifying the
value of the tail probability.
Each of the elements of p must be greater than 0 and less than 1.
The matrix free specifies the number of degrees of
freedom for the T-statistic and may be integer, real, or double-precision.
If t is the return value,
/ p = | tpdf(x, free) dx
/ t where tpdf
is the probability density function for the T-statistic.
If you enter
p = [.1, .5, .9]
free = 3
O-Matrix will respond
[ 1.63768 , 0 , -1.63768 ]