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Question: Answered & Verified by Expert
1. The function $f(x)=x^3-6 x^2+a x+b$ satisfy the conditions of Rolle's theorem in $[1,3]$. The values of $a$ and $b$ are
MathematicsApplication of DerivativesJEE Main
Options:
  • A $11. -6$
  • B $-6,11$
  • C $-11,6$
  • D $6,-11$
Solution:
1533 Upvotes Verified Answer
The correct answer is: $11. -6$
$f(1)=f(3) \Rightarrow a+b-5=3 a+b-27 \Rightarrow a=11$, which is given in option (1) only.

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