cdf_logistic SciMax Toolbox cdf_negative_binomial

SciMax Toolbox >> cdf_lognormal

cdf_lognormal

Maxima Function

Calling Sequence

cdf_lognormal (x,m,s)

Description

Returns the value at x of the distribution function of a Lognormal(m,s) random variable, with s>0. This function is defined in terms of Maxima's built-in error function erf.

(%i1) load (distrib)$
(%i2) assume(x>0, s>0)$  cdf_lognormal(x,m,s);
                           log(x) - m
                       erf(----------)
                           sqrt(2) s     1
(%o3)                  --------------- + -
                              2          2

See also .

cdf_logistic SciMax Toolbox cdf_negative_binomial