alleryThe domain of the function $f(x)=\dfrac{1}{x-2}$ is:
A$[2,\infty)$
B$\{2\}$
C$\mathbb{R}$
D$\mathbb{R}\setminus\{2\}$
Answer & Solution
Correct answer: D. $\mathbb{R}\setminus\{2\}$
1/(x−2) is undefined at x=2, so the domain is all reals except 2.
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