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Relations Functions — Easy JEE math MCQ

The domain of $f(x) = \sqrt{x-2}$ is:
  1. A. $[2, \infty)$
  2. B. $(2, \infty)$
  3. C. $(-\infty, 2]$
  4. D. $\mathbb{R}$

Solution

For $\sqrt{x-2}$ to be real: $x - 2 \geq 0 \Rightarrow x \geq 2$ Domain = $[2, \infty)$

MATH

easy • PYQ Reworded
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The domain of f(x)=x−2f(x) = \sqrt{x-2} is:
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