MCQ
Rolle's theorem is true for the function $f(x) = {x^2} - 4 $ in the interval
  • A
    $[-2, 0]$
  • $[-2, 2]$
  • C
    $\left[ {0,\,{1 \over 2}} \right]$
  • D
    $[0,\,\,2]$

Answer

Correct option: B.
$[-2, 2]$
b
(b) If Rolle's theorem is true for any function $f(x)$ in $[a,\,b].$

Then $f(a) = f(b),$ therefore $ [-2,2].$

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