1
KCET 2021
MCQ (Single Correct Answer)
+1
-0

Domain of the function

$$f(x)=\frac{1}{\sqrt{\left[x^2\right]-[x]-6}},$$

where $$[x]$$ is greatest integer $$\leq x$$ is

A
$$(-\infty,-2) \cup[4, \infty)$$
B
$$(-\infty,-2 \cup[3, \infty]$$
C
$$[-\infty,-2] \cup[4, \infty]$$
D
$$[-\infty,-2] \cup[3, \infty)$$
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