if f(x) greater or equal to 0 and b is greater or equal to 0 , then b.integral,
ID: 2971860 • Letter: I
Question
if f(x) greater or equal to 0 and b is greater or equal to 0 , then b.integral, from 0 to infinity, f(x)dx lesser or equal tointegral, from 0 to infinity, xf(x)dx thanks. I know its true but i cannot prove it yetExplanation / Answer
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