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# lyngby_cdf_t

## (export/lyngby/lyngby_cdf_t.m)

### Function Synopsis

P = lyngby_cdf_t(x,r)

### Help text

lyngby_cdf_t - Student t distribution
function P = lyngby_cdf_t(x,r)
Input: x Value where the function is evaluated
r Degrees of freedom
Output: P Lower tail area
Lower tail (cumulated) Student t distribution.
This function uses an approximation to the t distribution. The
approximation cannot be used for all values of x and r. For
the case where the approximation cannot be used the t
distribution is computed via the incomplete Beta function.
Ref: Lennart Raade, Beta, 17.4, page 385
Press, Numerical Recipes, sec 6.4
See also LYNGBY, LYNGBY_IDF_T, LYNGBY_CDF_F,
LYNGBY_CDF_GAUSS.
$Id: lyngby_cdf_t.m,v 1.4 2003/02/11 19:55:54 fnielsen Exp $

### Cross-Reference Information

This function is called by

Produced by mat2html on Wed Jul 29 15:43:40 2009

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