I don't know how to calculate the surface area after setting everything up. I have tried both MAPLE 15 program and wolfram alpha, but I can't find the answer. I have the function: f(x,y)= x*(y^2)*e^-((x^2+y^2)/4) The form I found for surface are was the square root of (sum of squares of partials with respect to x and y). The work I have so far ∫∫√(e^(-(x^2+y^2)/4))*(y^4-(3x^2*y^4)+(4y^2*x^2)+((x^4*y^4)/4)+((x^2*y^6)/4)+1 dx dy I have to integrate from -3 to 3 for both x and y. I have tried putting it into MAPLE 15, but it won't solve the function for a value. What should I do? Is there any way to simplify this algebraically so that it is easier to solve? Is it even possible to solve it by hand?