Sunday, November 15, 2015

calculus - Find limxrightarrow0fracx[x]



Find lim



[x] represent greatest integer less than or equal to x.



Right hand limit is not defined as [0+]=0, left hand limit is zero as [0-]=-1.
I want to know whether we can say limit exist or not. Because Left Hand Limit \neRight Hand Limit


Answer



For x\to 0 the expression \frac{x}{[x]} is not well defined since for $0


As you noticed, we can only consider



\lim_{x\rightarrow0^-}\frac{x}{[x]}=0


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