IGCSE Maths / Calculus
Optimisation problems revision notes
Edexcel International GCSE Maths (4MA1), chapter 28: Calculus, specification point 3.4e. Part of the full course.
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Optimisation uses differentiation to find the largest or smallest value of a quantity. Write the quantity as a formula in one variable, find where its graph is flat, then check that the result is physically possible and answer the question asked.