Post-UTME Mathematics 2006 Objective — Question 8

Question 8 of 10 from the Post-UTME Screening (Post-UTME) Mathematics 2006 Objective paper, with the correct answer and a full explanation.

Find the derivative of the function y=-2x²(2x-1) at the point x=-1 (figures partly unclear in the source)

A. -6
B. -4
C. 4Correct
D. 6

Explanation

The source's own worked solution computes a value of -16 at x=-1, which does not match any of the listed options — this looks like an error somewhere in the original question or key. The letter given by the source is C.

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