integral2 in matlab 2010

Which function can i use instead of integral2 in matlab 2010?

Answer 1

[Sean de Wolski]

If your company/university/employer is current on their SMS subscription, you can download the latest versions from:

http://www.mathworks.com/downloads/web_downloads/

[Lusine]

Thanks

Answer 2

[the cyclist]

dblquad

[Lusine]

But as I know dblquand can not be used when the bounds are infinite

[the cyclist]

Please consider editing your question so that it includes all the relevant details, rather than writing the briefest possible question (which tends to elicit the briefest possible answer).

[Lusine]

Sory! I need a function to clculate a double integral when the lower bound is negative infinity. As I unerstand interal2 function allows this, but I have mahlab 2010. So if its possible could You help me?

[Sean de Wolski]

You could always upgrade to R2012a!

[Lusine]

And how?

[Walter Roberson]

dblquad() allows you to specify the integration method, which could be quadgk() (possibly with a wrapper added to account for vector valued or scalar valued.)

[Lusine]

Do you mean I can use an expression like this?

fun=@(x,y)exp(-(x.^2-2*ro*x*y+y.^2)/2*(1-ro).^2);

q=dblquad(fun,-Inf,0,-Inf,0,[],quadgk(),0.5)