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TS EAMCET · Maths · Functions

The maximum value of \(\left\{x \in \mathbf{R} / \sqrt{x+2}>\sqrt{8-x^2}\right\}=\)

  1. A 2
  2. B \(\sqrt{2}+1\)
  3. C 3
  4. D \(2 \sqrt{2}\)
Verified Solution

Answer & Solution

Correct Answer

(D) \(2 \sqrt{2}\)

Step-by-step Solution

Detailed explanation

Given \(\left\{x \in \mathbf{R}: \sqrt{x+2}>\sqrt{8-x^2}\right\}\) \(\therefore\) Defining the function \(x+2 \geq 0 \Rightarrow x \geq-2\) \(\ldots\) (i) and \(8-x^2 \geq 0 \Rightarrow x \in[-2 \sqrt{2}, 2 \sqrt{2}]\) \(\ldots\) (ii) Now, \(\sqrt{x+2}>\sqrt{8-x^2}\)…