यदि \(f:\mathbb{R}\to\mathbb{R}\), (f(x)=\lfloor x\rfloor), तो (f) एकैकी है या नहीं?
If \(f:\mathbb{R}\to\mathbb{R}\), (f(x)=\lfloor x\rfloor), is (f) one-one?
Explanation opens after your attempt
B. एकैकी नहीं हैNot one-one
Concept
\(\lfloor x\rfloor\) एक अंतराल के कई मानों को एक ही पूर्णांक देता है। / \(\lfloor x\rfloor\) sends many values in an interval to the same integer.
Why this answer is correct
\(\lfloor 1.2\rfloor=1\) और \(\lfloor 1.8\rfloor=1\), जबकि \(1.2\ne 1.8\)। / \(\lfloor 1.2\rfloor=1\) and \(\lfloor 1.8\rfloor=1\), while \(1.2\ne 1.8\).
Exam Tip
ऐसे चरणदार फलन पूरे वास्तविक क्षेत्र पर एकैकी नहीं होते। / Such step functions are not one-one on the whole real domain.
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