2026 IGCSE Additional Mathematics May/June 0606/12 Q8

2026 IGCSE Additional Mathematics May/June 0606/12 Q8

5 marks

Variables \(x\) and \(y\) are related by the equation \(y=\dfrac{5x+1}{x-2}\).

Using calculus, find the approximate change in \(x\) when \(y\) increases from 4 by the small amount \(h\).[5]

Solution:

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Answer:The approximate change in \(x\) is \(-11h\).

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