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TS EAMCET · Maths · Limits

If \(l_1=\lim _{x \rightarrow 2^{+}}(x+[x]), l_2 \lim _{x \rightarrow 2^{-}}(2 x-[x])\) and \(l_3=\lim _{x \rightarrow \pi / 2} \frac{\cos x}{(x-\pi / 2)}\), then :

  1. A \(l_1 < l_2 < l_3\)
  2. B \(l_2 < l_3 < l_1\)
  3. C \(l_3 < l_2 < l_1\)
  4. D \(l_1 < l_3 < l_2\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(l_3 < l_2 < l_1\)

Step-by-step Solution

Detailed explanation

\(l_1=\lim _{x \rightarrow 2^{+}} x+[x]\) \(=\lim _{h \rightarrow 0} 2+h+[2+h]=4\) \(l_2=\lim _{x \rightarrow 2^{-}}(2 x-[x])\) \(=\lim _{h \rightarrow 0}\{2(2-h)-[2-h]\}\) \(=\lim _{h \rightarrow 0}\{2(2-h)-1\}=4-1=3\)…
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