यदि \(f:{0,1,2,3,4}\to{0,1,2,3,4}\) को (f(x)=x-2-3x+2) से दिया जाए, तो क्या (f) वैध फलन है?
If \(f:{0,1,2,3,4}\to{0,1,2,3,4}\) is given by (f(x)=x-2-3x+2), is (f) a valid function?
Explanation opens after your attempt
B. नहीं, क्योंकि \(f(4)=6\notin{0,1,2,3,4}\)No, because \(f(4)=6\notin{0,1,2,3,4}\)
Concept
Here (f(4)=16-12+2=6), which is not in the codomain. For a finite domain, match every value with the codomain.
Why this answer is correct
The correct answer is B. नहीं, क्योंकि \(f(4)=6\notin{0,1,2,3,4}\) / No, because \(f(4)=6\notin{0,1,2,3,4}\). Here (f(4)=16-12+2=6), which is not in the codomain. For a finite domain, match every value with the codomain.
Exam Tip
(f(4)=16-12+2=6) है, जो सहप्रांत में नहीं है। सीमित प्रांत में हर मान को सहप्रांत से मिलाएं।
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