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MathsMediumMCQ2013 · 25 Apr Online

Q80.Let f(1) = −2 and f ′(x) ≥4.2 for 1 ≤x ≤6 . The possible value of f(6) lies in the interval : (1) [15, 19) (2) (−∞, 12) (3) [12, 15) (4) [19, ∞)

What This Question Tests

This question requires applying the Mean Value Theorem to establish an inequality for the function's value at a specific point, given a lower bound for its derivative over an interval.

Concepts Tested

Mean Value TheoremDerivativesInequalities

Formulas Used

f'(c) = (f(b) - f(a)) / (b - a)

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