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Let f,[2,7]rarr[0,oo) be a continuous an...

Let `f,[2,7]rarr[0,oo)` be a continuous and differentiable function, Then the value if `(f(7)-f(2))((f(7))^2+(f(2))^2+f(2)xf(7))/3` is (where `cin(2,7)`)

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