Continuity and DifferentiabilityHard

Question

If f(x) = | (x - 4)(x - 5) | , then f′(x) is equal to -

Options

A.-2x + 9, for all x  R
B.2x - 9, if 4 < x < 5
C.-2x + 9, if 4 < x < 5
D.None of these

Solution

-

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