my teacher thinks he is brilliant " he is"
Level
1
Let f (x;y) be a continuous, real-valued function on R^2. Suppose that, for every rectangular region R of area 1, the double integral of f (x;y) over R equals 0. Must f (x;y) be identically 0?
yes
no
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1 solution
actually i would go with the answer but unfortunately it is not the right answer
it took a lot of time to solve this big animal