Question: Find K such that the function is a probability density function. f(x, y) = [ke-(x + y), x 0, y 0 0, elsewhere

Find K such that the function

f(x, y) = [ke-(x + y), x 0, y 0 0, elsewhere

is a probability density function.

f(x, y) = [ke-(x + y), x 0, y 0 0, elsewhere

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