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AP EAMCET · Maths · Functions

The domain of the function \(f(x)=\sqrt{\log _{0.5} x !}\) is

  1. A \(\{0,1,2,3, \ldots\}\)
  2. B \(\{1,2,3, \ldots\}\)
  3. C \((0, \infty)\)
  4. D \(\{0,1\}\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(\{1,2,3, \ldots\}\)

Step-by-step Solution

Detailed explanation

We have, \(f(x)=\sqrt{\log _{0.5} x !}\) So, \(f(x)\) will be defined when, \(\begin{aligned} & \log _{0.5} x ! \geq 0 \\ & x ! \leq(0.5)^0 \\ & x ! \leq 1 \quad \therefore x \in\{0,1\} \end{aligned}\) Hence, the domain of the function is \(\{0,1\}\).