Unit 5: Calculus

Topic 5.7: The Second Derivative Questions

Practice 8 exam-style questions for IB Math AA SL Topic 5.7. Review the question stems below, then unlock the full Question Bank to access markschemes, model answers, and AI grading.

1State2 marks
2026Aimnova practice — 5.7.1
A curve has a stationary point at x = 2, where f''(2) = −5. State the nature of this point.
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2Find2 marks
2026Aimnova practice — 5.7.1
Given f(x) = 2x³ − 5x + 1, find f''(x).
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3Find3 marks
2026Aimnova practice — 5.7.1
For f(x) = x³ − 12x, find the stationary points and classify them with the second-derivative test.
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4Find2 marks
2026Aimnova practice — 5.7.1
Given y = x⁴, find d²y/dx² and state the concavity of the curve for x > 0.
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5Find2 marks
2026Aimnova practice — 5.7.1
For f(x) = 2x³ − 9x² + 12x, find the x-coordinate where the concavity changes.
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6Find2 marks
2026Aimnova practice — 5.7.1
A curve has f'(x) = 3x² − 6x. Find f''(x), and use it to classify the stationary point at x = 2.
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7Find2 marks
2026Aimnova practice — 5.7.1
For f(x) = x³ − 6x², find the values of x for which the curve is concave up.
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8Explain2 marks
2026Aimnova practice — 5.7.1
A curve has a stationary point at x = −1 where f''(−1) = 0. Explain why the second-derivative test cannot classify it.
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