Changing the subject in rational formulae

Changing the subject in rational formulae

Secondary 2
TGM Original Questions
  1. Make \(f\) the subject of \(v=\frac{5s(f^2-u)}{f^2}\).
  2. Given \(\frac3p=\frac2q+\frac{p}{r}\), express \(r\) in terms of \(p,q\).

Solution:

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Answer:(a) \(f=\pm\sqrt{\frac{5su}{5s-v}}\); (b) \(r=\frac{p^2q}{3q-2p}\).

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