plumiPoints of inflection, concave and convex: WJEC A‑Level Maths questions
WJEC A-Level Maths past-paper questions on 7.7 Points of inflection, concave and convex, 2018–2025, with mark schemes and examiner’s reports where available. Add MadAsMaths questions to your practice, or browse them separately by topic and difficulty.
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All 4 questions on Points of inflection, concave and convex, as a list
- Summer 2025, Unit 3, Q5 (8 marks): 2 f x ( ) x 6 x 12 x . 5 5. A curve is defined by (a) Find the coordinates of the stationary point and determine its nature. [6] Determine the range of
- Summer 2024, Unit 3, Q13 (3 marks): for the interval y f x x ,x 13. The diagram below shows a sketch of the graph of . 1 5 y y = (x) x3 x x4 x5 x1 x2 O Find the interval on which f x
- Summer 2023, Unit 3, Q11 (7 marks): ( ) = 5x3 + 2x2 − 3x . A curve C has equation f x 1 1 a) Find the x-coordinate of the point of inflection. State, with a reason, whether the point of inflection
- Summer 2022, Unit 3, Q13 (7 marks): A function is defined by f (x) = 2x3 + 3x – 5. 1 3 a) Prove that the graph of f (x) does not have a stationary point. [2] b) Show that the graph of f (x) does h
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