Changing the subject of formulae

Changing the subject of formulae

Secondary 2

3 marks

TGM Original Questions

Make the variable in square brackets the subject: \(V=\dfrac{h^2+k^2}{3h}\) [\(k\)].[3]

Assume \(h\ne0\) and \(3hV-h^2\ge0\).

Solution:

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Answer:\(k=\pm\sqrt{3hV-h^2}\)

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