यदि \(A=\{1,2,3\}\) और \(B=\{a,b\}\) हों, तो \(R=\{(1,a),(1,b),(2,a),(3,b)\}\) फलन क्यों नहीं है?
If \(A=\{1,2,3\}\) and \(B=\{a,b\}\), why is \(R=\{(1,a),(1,b),(2,a),(3,b)\}\) not a function?
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Correct Answer
A. क्योंकि (1) की दो अलग-अलग छवियां हैंBecause (1) has two different images
Concept
In a function, one domain element cannot have two different images. In exams, check repeated first components carefully.
Why this answer is correct
The correct answer is A. क्योंकि (1) की दो अलग-अलग छवियां हैं / Because (1) has two different images. In a function, one domain element cannot have two different images. In exams, check repeated first components carefully.
Exam Tip
किसी फलन में प्रांत के एक तत्व की दो अलग छवियां नहीं हो सकतीं। परीक्षा में समान पहले घटक को ध्यान से जांचें।
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