यदि \(A=\{1,2\}\) और \(B=\{3,4\}\) है तो कौन सा संबंध (A) से (B) में फलन है?
If \(A=\{1,2\}\) and \(B=\{3,4\}\), which relation from (A) to (B) is a function?
Explanation opens after your attempt
A. \(R=\{(1,3),(2,4)\}\)
Concept
Here both (1) and (2) have exactly one image. To test a function check the first components.
Why this answer is correct
The correct answer is A. \(R=\{(1,3),(2,4)\}\). Here both (1) and (2) have exactly one image. To test a function check the first components.
Exam Tip
यहां (1) और (2) दोनों का ठीक एक प्रतिबिंब है। फलन जांचते समय पहले अवयवों को देखें।
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