Math miscellaneousHard

Question

Let f(x) = 4 and f′(x) = 4. Then is given by

Options

A.2
B.-2
C.-4
D.3

Solution

We have, f(2) - 2f′(x) = f(2) - 2f′(2) = 4 - 2 × 4 = - 4

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