यदि संबंध \(R=\{(x,y):y^2=x,\ x\in{1,4},\ y\in{-2,-1,1,2}\}\) को (x) से (y) की ओर माना जाए, तो यह फलन क्यों नहीं है?
If the relation \(R=\{(x,y):y^2=x,\ x\in{1,4},\ y\in{-2,-1,1,2}\}\) is considered from (x) to (y), why is it not a function?
Explanation opens after your attempt
A. क्योंकि (x=1) की दो छवियां (y=1) और (y=-1) हैंBecause (x=1) has two images (y=1) and (y=-1)
Concept
From \(y^2=1\), both (y=1) and (y=-1) are obtained. In exams, if one first component has more than one image, it is not a function.
Why this answer is correct
The correct answer is A. क्योंकि (x=1) की दो छवियां (y=1) और (y=-1) हैं / Because (x=1) has two images (y=1) and (y=-1). From \(y^2=1\), both (y=1) and (y=-1) are obtained. In exams, if one first component has more than one image, it is not a function.
Exam Tip
\(y^2=1\) से (y=1) और (y=-1) दोनों मिलते हैं। परीक्षा में एक पहले घटक की एक से अधिक छवि होने पर फलन नहीं होता।
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