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in Mathematics by (25.1k points)
मान लीजिए कि `f: W to W , f(n)=n-1 ` , यदि n विषम है तथा `f(n)=n+1` , यदि n सम है , द्वारा परिभाषित है । सिद्ध कीजिये कि f व्युत्क्रमणीय है ।f का प्रतिलोम ज्ञात कीजिए। यहाँ W समस्त पूर्णांकों का समुच्चय है ।

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