IP1U5 5.4 Exercise Q7
IP1U5 5.4 Exercise Q7
Given that \(\frac{1}{y}-\frac{1}{a}=\frac{1}{a+b}\), express \(y \) in terms of \(a \) and \(b \). Hence find \(y\) when \(a=2\) and \(b=-3\).
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Answer:y=a(a+b)/(2a+b); when a=2 and b=-3, y=-2.
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