5. Continuity and Differentiation
normal

Let $f(x) = (x-4)(x-5)(x-6)(x-7)$ then -

A

$f'(x) = 0$ has four roots

B

Three roots of $f'(x) = 0$ lie in $(4, 5)  \cup  (5, 6)  \cup  (6, 7)$

C

The equation $f'(x) = 0$ has only one root

D

Three roots of $f'(x) = 0$ lie in $(3, 4)  \cup  (4, 5)  \cup  (5, 6)$

Solution

Standard 12
Mathematics

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