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If A={1,2,3} and f={(1,4),(2,5)}, why is f not a function from A?यदि A={1,2,3} और f={(1,4),(2,5)} है, तो f A से फलन क्यों नहीं है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: Because 3 has no imageक्योंकि 3 का कोई प्रतिबिंब नहीं है
The element 3 of domain A is not the first component in any pair. Every domain element must have an image in a function.प्रांत A का 3 किसी भी युग्म में प्रथम अवयव नहीं है। फलन में हर प्रांत तत्व का प्रतिबिंब होना चाहिए।
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