यदि \(f:{1,2,3,4}\to{1,4,9,16}\) और (f(x)=x-2) है, तो (9) की पूर्वछवि क्या है?
If \(f:{1,2,3,4}\to{1,4,9,16}\) and (f(x)=x-2), what is the preimage of (9)?
Explanation opens after your attempt
C. (3)
Concept
\(3^2=9\), so the preimage of (9) is (3). In exams, find the domain element associated with the image.
Why this answer is correct
The correct answer is C. (3). \(3^2=9\), so the preimage of (9) is (3). In exams, find the domain element associated with the image.
Exam Tip
\(3^2=9\) इसलिए (9) की पूर्वछवि (3) है। परीक्षा में छवि से संबंधित प्रांत तत्व खोजें।
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