\(x∝\cfrac{1}{y}\) হলে, (a) \(x=\cfrac{1}{y}\) (b) \(y=\cfrac{1}{x}\) (c) \(xy=1\) (d) \(xy=\)অশূন্য ধ্রুবক

Answer: D
\(x∝ \cfrac{1}{y} \)
বা, \(x=\cfrac{k}{y}\) [\(k\) অশূন্য ভেদ ধ্রুবক]
\(∴xy=k \)

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