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JEE Mains · Maths · STD 11 - 4.2 Quadratic equations and inequations

माना \(\lambda \in \mathbb{R}\) है तथा माना समीकरण \(\mathrm{E}:|\mathrm{x}|^2-2|\mathrm{x}|+|\lambda-3|=0\) है। तो समुच्चय \(\mathrm{S}=\{\mathrm{x}+\lambda: \mathrm{x}, \mathrm{E}\) का एक पूर्णांक हल है \(\}\) में सबसे बड़ा अवयव है______________. 

  1. A \(4\)
  2. B \(3\)
  3. C \(5\)
  4. D \(2\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(5\)

Step-by-step Solution

Detailed explanation

\(| x |^2-2| x |+|\lambda-3|=0\) \(| x |^2-2| x |+|\lambda-3|-1=0\) \((| x |-1)^2+|\lambda-3|=1\) At \(\lambda=3, x =0\) and 2 , at \(\lambda=4\) or 2 , then \(x =1 \text { or }-1\) So maximum value of \(x+\lambda=5\)
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