A) f is one-one
B) f is not one-one and non-constant
C) f is a constant function
D) None of these
Correct Answer: C
Solution :
[c] \[f(x)=\frac{\sin [x]\pi }{{{x}^{2}}+x+1}\]Let \[[x]=n\in \]integer \[\therefore \sin [x]\pi =0\] Or \[f(x)=0\] Hence, f(x) is constant function.
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