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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?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?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: Because (x=1) has two images (y=1) and (y=-1)क्योंकि (x=1) की दो छवियां (y=1) और (y=-1) हैं
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.(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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