What does the warning "Integrand function outputs did not match to the required tolerance" mean?

I was performing a double integral via integral2 and set RelTol = 1e-8 AbsTol=1e-10, the waring

"Integrand function outputs did not match to the required tolerance when the same input values were

supplied in two separate calls with different size input matrices. " is encountered.

it is a warning, does it mean the result is inaccurate?

(on Linux)

Answer 1

[Walter Roberson]

Yes, it does mean the value is inaccurate. It means that the value is probably meaningless.

You probably used / or * instead of ./ or .* at some point. Or perhaps a ^ where you need .^