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If (A={1,2,3}) and (B={1,2,3,4}), and (f(x)=x), what is the range of (f)?यदि (A={1,2,3}) और (B={1,2,3,4}) हों, तथा (f(x)=x) हो, तो (f) का परिसर क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: ({1,2,3})({1,2,3})
For (x=1,2,3), the images are (1,2,3). In exams, an extra element of the codomain need not belong to the range.(x=1,2,3) पर छवियां (1,2,3) ही हैं। परीक्षा में सहप्रांत का अतिरिक्त तत्व परिसर में जरूरी नहीं आता।
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