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JEE Mains · Maths · STD 11- 2. Relation and Function

જે વિધેય \(f(x)=\frac{\sqrt{x^2-25}}{\left(4-x^2\right)}+\log _{10}\left(x^2+2 x-15\right)\) નો પ્રદેશ \((-\infty, \alpha) \cup[\beta, \infty)\) હોય, તો \(\alpha^2+\beta^3 =\) ...........

  1. A \(140\)
  2. B \(175\)
  3. C \(150\)
  4. D \(125\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(150\)

Step-by-step Solution

Detailed explanation

\( f(x)=\frac{\sqrt{x^2-25}}{4-x^2}+\log _{10}\left(x^2+2 x-15\right) \) \( \text { Domain : } x^2-25 \geq 0 \Rightarrow x \in(-\infty,-5] \cup[5, \infty) \) \( 4-x^2 \neq 0 \Rightarrow x \neq\{-2,2\} \) \( x^2+2 x-15>0 \Rightarrow(x+5)(x-3)>0 \)…
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