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माना A = R - {2} और B = R - {1} . यदि f ...

माना A = R - {2} और B = R - {1} . यदि f : `A to B` , जो `f (x) = (x - 1)/(x - 2) ` से परिभाषित हैं , दर्शाइये कि f एकैकी आच्छादक फलन हैं ।

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