MATLAB: Symbolic integration for chi-square distribution

chi-square distributionnumerical integrationsymbolic integration

I want to do following integration:
syms x y
F = @(x,y)chi2pdf(y,2).*chi2pdf(x,1);
fp = int(int(F,y,x-3,100),x,0,100);
However, it does not show an explicit number. Is there any way to carry out the integration? Thank you.

Best Answer

Possibly you will have to go back to the definition of chi2pdf that is on the documentation page, http://www.mathworks.com/help/toolbox/stats/chi2pdf.html as chi2pdf routine is a numeric routine rather than a symbolic routine.