On the curve, the points at which the gradient of the curve is equal to zero are
 

  • A c, d, f. i, l
  • B b, e, g, j, m
  • C a, b, c, d, f, i, j, l
  • D c, d, f, h, i, l
jamb 1989mathematics

The correct answer is B. b, e, g, j, m

The gradient of any curve is equal to zero at the turning points. i.e. maximum or minimum points. The points in the above curve are b, e, g, j, m

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