3.let fbe differentiable for all x. if {1) =-2 and f (x) 2 2 for all x e [1,6]. then prove that f6) 28. 4. using mean value theorem, show that tan b-tan a < a>0

3.Let fbe differentiable for all x. If {1) =-2 and f (x) 2 2 for all x e [1,6]. Then prove that f6) 28. 4. Using mean value theorem, show that tan B-tan a < a>0. 1+ 5. Iffx) and g(x) are continuous functions in [a, b] and they are differentiable in (a, b), then prove that

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