Re: please explain why numerical integration is attempted for this input

*To*: mathgroup at smc.vnet.net*Subject*: [mg72539] Re: [mg72492] please explain why numerical integration is attempted for this input*From*: "Chris Chiasson" <chris at chiasson.name>*Date*: Fri, 5 Jan 2007 02:30:16 -0500 (EST)*References*: <200701030542.AAA29349@smc.vnet.net> <459D1B60.5080501@wolfram.com>

Thanks for the reply. Why doesn't it just return unevaluated or with a symbolic integral? On 1/4/07, Darren Glosemeyer <darreng at wolfram.com> wrote: > Chris Chiasson wrote: > > Needs["Statistics`MultinormalDistribution`"] > > CDF[MultinormalDistribution[{1, > > 3},{{1/50,-2/125},{-2/125,9/500}},{{1/(5*Sqrt[2]),0},{(-2*Sqrt[2])/25, > > Sqrt[13]/50}}],{2/10,1}] > > > > Thank you, > > > > > Closed form results are generally not known for cdfs of multivariate > normal distributions with non-diagonal covariance matrices. Numeric > methods are needed to obtain a result. > > Darren Glosemeyer > Wolfram Research > -- http://chris.chiasson.name/

**References**:**please explain why numerical integration is attempted for this input***From:*"Chris Chiasson" <chris@chiasson.name>