Double Integral Syntax: WolframAlpha Solver

[N_F]

Online integrator: http://www.wolframalpha.com/


\int \int (x,y,z) \times (x,y,z) \times (x,y,z)


\int_{L1} \int_{L2} (dl1,0,0) \times (dl2,0,0) \times (0,-1,0)

What would be correct syntax to evaluate this double integral?



I tried these, but they produce wrong result:

try #1: integral[{l1,0,0} cross {l2,0,0} cross {0,-1,0}, {l1,0,1}, {l2,0,1}]

try #2: integral[l1,0,1] integral[l2,0,1] {l1,0,0} cross {l2,0,0} cross {0,-1,0}

 

[Lord Crc]

Dunno about the vector stuff, but for regular double integrals I've used the following syntax: integrate x^2 * e^y dx dy, x=0..1, y=0..1

edit: however it doesn't seem very smart and in my experience frequently fails even on relatively simple double integrals.

 

[N_F]

Dunno about the vector stuff, but for regular double integrals I've used the following syntax: integrate x^2 * e^y dx dy, x=0..1, y=0..1

edit: however it doesn't seem very smart and in my experience frequently fails even on relatively simple double integrals.

That is yet another way to say the same thing, apperantly, but then, I guess, the original result might actually be correct after all. Who is the judge?