Q. 91

Question

$P r o v e p a r t (b) o f T h e o r e m 3.10 : I f b o t h f a n d f' a r e d i f f e r e n t i a b l e o n a n i n t e r v a l I, a n d f'' i s n e g a t i v e o n I, t h e n f i s c o n c a v e d o w n o n I .$

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Answer

1Step 1. Given Information.

2Step 2. Theorem

Q. 90

Q. 91

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