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ধরি A=R={3}, B=R-{1};f:

A \to B

F (x) = \frac{x - 2}{x - 3}

F^{- 1} = x

এর মান কত?

\frac{3 x - 4}{x - 1}

\frac{3 x - 2}{x - 1}

\frac{x - 1}{3 x - 2}

\frac{y - 1}{3 y - 2}

ANS : 2

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