Paper 1 · Differentiation
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Lesson 15 of 21
Differentiation 15 – Turning points/Maximum and Minimum points
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- Find turning points with the 5-step recipe: solve f'(x) = 0, sub x into f(x) for y
- Classify each point with the second-derivative test: f'' > 0 min, f'' < 0 max
- Find unknown coefficients from a given turning point via simultaneous equations
- Prove a function has no turning points by showing f'(x)'s numerator is never zero
Most recent exam questions
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