From: ati on
Hi,
I'd like to evaluate double improper intagral, like:
>>F=@(t,x)exp(-x.*t)./t.^3;

>>dblquad(F,1,inf,0,inf));
results: Warning: Infinite or Not-a-Number function value encountered. ans= NaN

and
>> int(int(F,t,1,inf),x,0,inf);
results: ??? Undefined function or variable 't'.

Help is much appreciated.