TS EAMCET · Maths · Functions
Domain of \(\cos ^{-1}\left[\log _5\left(x^2+7 x+15\right)\right]\) is
- A The set of all real numbers
- B \((-\infty,-5] \cup[-2, \infty)\)
- C \(R-\{-5,-2\}\), where \(R\) is the set of real numbers
- D \([-5,-2]\)
Answer & Solution
Correct Answer
(B) \((-\infty,-5] \cup[-2, \infty)\)
Step-by-step Solution
Detailed explanation
We have, \(f(x)=\cos ^{-1}\left[\log _5\left(x^2+7 x+15\right)\right]\) \(f(x)\) is defined of…
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