Changing the subject in rational formulae

Changing the subject in rational formulae

Secondary 2

3 marks

TGM Original Questions

Make \(f\) the subject of \(v=\dfrac{5s(f^2-u)}{f^2}\).[3]

Assume \(5s\ne v\) and \(\dfrac{5su}{5s-v}>0\).

Solution:

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Answer:\(f=\pm\sqrt{\dfrac{5su}{5s-v}}\)

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