यदि \(f:A\to B\), \(A=\{1,2,3\}\), \(B=\{2,4,6,8\}\) और (f(x)=2x) हो, तो (f) का परिसर क्या है?
If \(f:A\to B\), \(A=\{1,2,3\}\), \(B=\{2,4,6,8\}\), and (f(x)=2x), what is the range of (f)?
Explanation opens after your attempt
Correct Answer
C. ({2,4,6})
Concept
Putting (x=1,2,3) gives images (2,4,6). In exams, the range is only the set of actually obtained images.
Why this answer is correct
The correct answer is C. ({2,4,6}). Putting (x=1,2,3) gives images (2,4,6). In exams, the range is only the set of actually obtained images.
Exam Tip
(x=1,2,3) रखने पर छवियां (2,4,6) मिलती हैं। परीक्षा में परिसर केवल प्राप्त छवियों का समुच्चय होता है।
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