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Questions  

The domain of the function f(x)=4x2[x]+2 where [x] denotes the greatest integer less than or equal to x, is

a
[-- 1, 2]
b
(−∞,−2)
c
(−∞,−2)∪[−1,2]
d
none of these

detailed solution

Correct option is C

For  f (x) to be real, we must have4−x2[x]+2>0 and [x]+2≠0⇒4−x2[x]+2>0 and x∉[−2,−1)

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