Question:

The value of \(\underset{x\rightarrow 3}{lim}\frac{[x]-3}{x-3}\), where \([\cdot ]\) denotes the greatest integer function, is.....

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Compare the left-hand and right-hand limits.
Updated On: Oct 1, 2026
  • \(\infty\)
  • \(1\)
  • \(0\)
  • does not exist
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The Correct Option is D

Solution and Explanation

Step 1: Right-hand limit
For \(x\) slightly above \(3\), \([x]=3\), so the fraction is \(\frac{0}{x-3}=0\). The limit is \(0\).

Step 2: Left-hand limit
For \(x\) slightly below \(3\), \([x]=2\), so the fraction is \(\frac{-1}{x-3}\). As \(x\to3^-\), \(x-3\to0^-\), and the fraction tends to \(+\infty\).

Step 3: Compare
The two sided limits differ (\(0\) and \(+\infty\)), so the limit does not exist. Option (D).

Final Answer:
The limit does not exist, option (D). \[ \boxed{\text{(D)}} \]
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