यदि \(A=\{1,2,3,4\}\), \(B=\{p,q\}\) और \(R=\{(1,p),(2,q),(4,p)\}\) हो, तो (R) फलन क्यों नहीं है?
If \(A=\{1,2,3,4\}\), \(B=\{p,q\}\), and \(R=\{(1,p),(2,q),(4,p)\}\), why is (R) not a function?
Explanation opens after your attempt
Correct Answer
A. क्योंकि (3) की कोई छवि नहीं हैBecause (3) has no image
Concept
In a function every domain element must have exactly one image but (3) is missing. In exams, compare first components with the whole domain.
Why this answer is correct
The correct answer is A. क्योंकि (3) की कोई छवि नहीं है / Because (3) has no image. In a function every domain element must have exactly one image but (3) is missing. In exams, compare first components with the whole domain.
Exam Tip
फलन में प्रांत के हर तत्व की ठीक एक छवि होनी चाहिए पर (3) छूट गया है। परीक्षा में पहले घटकों को पूरे प्रांत से मिलाएं।
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