I have to calculate the following integral: $\int_0^1 \int_1^2 \frac{ln(x+y)}{(x+y)^3} dxdy$
Any help? I don't know how to separate the variables.
2026-03-28 06:40:14.1774680014
Calculate the following integral in the rectangle $[0,1]$x$[1,2]$
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