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Which of the following is a function from (A={1,2}) to (B={3,4,5})?निम्न में से कौन सा (A={1,2}) से (B={3,4,5}) में फलन है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: ({(1,3),(2,4)})({(1,3),(2,4)})
Step 1: In a function, each element of the domain must have exactly one image. Step 2: In the first option, both (1) and (2) have exactly one image. Step 3: If an element has two images or is missing, it is not a function.चरण 1: फलन में प्रांत के हर तत्व का ठीक एक प्रतिबिंब होना चाहिए। चरण 2: पहले विकल्प में (1) और (2) दोनों का एक-एक प्रतिबिंब है। चरण 3: किसी तत्व के दो प्रतिबिंब हों या कोई तत्व छूट जाए तो वह फलन नहीं होता।
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