Question:medium

If \(c \in (1,3)\) satisfies Lagrange’s Mean Value Theorem for \[ f(x)=x^3-2x^2+x-1 \] on \([1,3]\), then find: \[ 9c^2-12c = \ ? \] 

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Always compute average rate of change first in MVT problems.
Updated On: Jun 22, 2026
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The Correct Option is B

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