Question

int xy ((x^2)+(y^2))^(1/2) dy dx, x=0..1, y=0..1

Answer 1

http://www.wolframalpha.com/input/?i=Integrate%5BSqrt%5Bx%5E2+%2B+y%5E2%5D%2C+%7Bx%2C+0%2C+1%7D%2C+%7By%2C+0%2C+1%7D%5D

Answer 2

or you mean
http://www.wolframalpha.com/input/?i=Integrate%5B+x+y+Sqrt%5Bx%5E2+%2B+y%5E2%5D%2C+%7Bx%2C+0%2C+1%7D%2C+%7By%2C+0%2C+1%7D%5D&dataset=&equal=Submit
this is pretty straight forward

Answer 3

experimentX, you missed "xy"...I've just resorted wolfram but I can't get the result, so I hope someone could give me a hint...tks anyway

Answer 4

your region is a square ... the there is 'xy' then it's pretty straight forward.