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IB Mathematics: Applications and Interpretation HL · 12.9: Differentiation · 12.9.11

Stationary points: where the gradient is zero Problem set B Answers

Skills

  1. a = 24

  2. a = 3

  3. a = 0.333

  4. a = 2

  5. x = −3 or 1

  6. x = −1.17 or 0.101 or 1.06

  7. x = 3

In context

  1. a = 6

  2. t = 3 and t = 9 hours

Stretch

  1. a = −7.5, b = 12

  2. x = 0, 1.22, 3.28

jmaths.xyz · AI HL · 12.9.11 Stationary points: where the gradient is zero