Question: 3. (12) Prove: If f is continuous on [a, b] and differentiable on (a, b) and f'(x) (12) Prove: If f is continuous on [a,

(12) Prove: If f is continuous on [a, b] and differentiable on

3. (12) Prove: If f is continuous on [a, b] and differentiable on (a, b) and f'(x)

(12) Prove: If f is continuous on [a, b] and differentiable on (a, b) and f < 0, Vxe(a, b) then is f is decreasing on [a, b] .

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