What is the domain of the function \(f(x)=\frac{1}{\sqrt{x-2}}\)?

Correct answer: \(x>2\)

For real-valued outputs, \(x-2\ge 0\) is required because it is under a square root. Since the square root is in the denominator, it cannot be zero; therefore \(x-2>0\), giving \(x>2\). Hence the domain is \((2,\infty)\). Option B is incorrect because at \(x=2\), the denominator becomes zero. Exam tip: when a square root occurs in the denominator, its radicand must be strictly positive.