Asymmetric quadratic coefficient problem

*To*: mathgroup at smc.vnet.net*Subject*: [mg49864] Asymmetric quadratic coefficient problem*From*: "Xiao Huang" <xiaohda at hotmail.com>*Date*: Wed, 4 Aug 2004 10:46:56 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

Dear All, Does any one know how to deal with asymmetric quadratic coefficient in QuadraticFormDistribution[ {A,b,c}, {mu, sigma}] for z'Az+b'z+c? Mathematica assumes A is a symmetric matrix, but I now have an asymmetric and singular matrix A. Also, I'd really appreciate if any expert here can give me some clue/reference about the following problem: how can I calculate different quantiles of a mixture distribution? One way is to do the simulation, but is it possible to use the function Quantile[.] in Mathematica? if yes, how? Thank you! Xiao _________________________________________________________________ Overwhelmed by debt? Find out how to ?Dig Yourself Out of Debt? from MSN Money. http://special.msn.com/money/0407debt.armx