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quasar987
Dec18-04, 01:17 PM
I am asked to calculate the double integral of the function

f(x,y) = (2x+3y)^2 = 4x^2 + 12xy + 9y^2

on the domain defined by a triangle whose summits(?) are at (-1,0), (0,1) and (1,0). I chose to integrate from left to right. So the bounds of my integral are

\int_0^1 \int_{y-1}^{1-y} (4x^2 + 12xy + 9y^2)dxdy

arildno
Dec18-04, 01:22 PM
1) Vertices, not summits
2) Looks good to me