Paper 1 · Differentiation
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Lesson 16 of 21
Differentiation 16 – Increasing/ Decreasing Curves
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- Classify a curve as increasing or decreasing from the sign of f'(x)
- Prove a function is always increasing or decreasing by a sign analysis of f'(x)
- Justify the denominator's sign with the axiom 'any real number squared ≥ 0'
- Find the ranges of x where a cubic increases or decreases from its turning points
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