If fx-xx-1-1y- then fy equals

The correct option is D 1 x given xx 1=1y so y=x 1x so f(y)=f(x 1x)=x 1xx 1x 1=1 x ...

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Solving Equations with Variables on Both Sides

If fx=xx-1=...

Question

If $f (x) = \frac{x}{x - 1} = \frac{1}{y}$ , then $f (y)$ equals

x

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X - 1

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x + 1

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1 - x

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