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If (A={1,2,3}), (B={x,y}), and (R={(1,x),(3,y)}), why is (R) not a function?यदि (A={1,2,3}), (B={x,y}) और (R={(1,x),(3,y)}) हो, तो (R) फलन क्यों नहीं है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: Because (2) has no imageक्योंकि (2) की कोई छवि नहीं है
Every element of (A) must have exactly one image in a function, but (2) is missing. In exams, compare first components with the whole domain.फलन में (A) के हर तत्व की ठीक एक छवि होनी चाहिए, पर (2) छूट गया है। परीक्षा में पहले घटकों को पूरे प्रांत से मिलाएं।
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