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If (f:{1,2,3}\to{1,4,9,16}) and (f(x)=x^2), what is true about the preimage of (16)?यदि (f:{1,2,3}\to{1,4,9,16}) और (f(x)=x^2) है, तो (16) की पूर्वछवि के बारे में क्या सही है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: It has no preimageइसकी कोई पूर्वछवि नहीं है
(4) is not in the domain, so (16) is not obtained. In exams, a preimage must come from the domain only.प्रांत में (4) नहीं है इसलिए (16) प्राप्त नहीं होता। परीक्षा में पूर्वछवि केवल प्रांत से ही ली जाती है।
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