Inverse cube-root relation
Inverse cube-root relation
Secondary 2
4 marks
TGM Original Questions
Optional extension
The quantity \(a\) is inversely proportional to \(4\sqrt[3]{b}\), and \(a=3\) when \(b=8\). Find
- the equation connecting \(a,b\), and[2]
- \(b\) when \(a=12\).[2]
Solution:
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Answer:(a) \(a=\dfrac6{\sqrt[3]{b}}\) (b) \(b=\dfrac18\).
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