Let S be the part of the plane Find the flux of the vector field across the surface S.

I'm stuck

If i use the equation int int Fnds i get the int int of 11/(11)^(1/2)

if I use int int Fn |ruXrv|i get stuck at ruXrv because I don't know how to find my ru and rv.

I can't use the divergence therem because there are no values.

What method should I use? And how do I set up the bounds? Thank you so much!