एक student ने \(R=\{(1,a),(2,b),(2,c),(3,d)\}\) को function कहा। उसकी गलती क्या है?
A student called \(R=\{(1,a),(2,b),(2,c),(3,d)\}\) a function. What is the mistake?
Explanation opens after your attempt
A. (2) की दो different images (b) और (c) हैं(2) has two different images (b) and (c)
Concept
One input (2) is related to two outputs, so it is not a function. In function checks, first notice repeated first coordinates.
Why this answer is correct
The correct answer is A. (2) की दो different images (b) और (c) हैं / (2) has two different images (b) and (c). One input (2) is related to two outputs, so it is not a function. In function checks, first notice repeated first coordinates.
Exam Tip
एक input (2) दो outputs से जुड़ा है, इसलिए यह function नहीं है। function check में repeated first coordinate पर सबसे पहले ध्यान दें।
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