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Let x∈ R∗x \in \!\,\mathbb{R^*}x∈R∗, calculate ⌊1x2+1⌋\left \lfloor \dfrac{1}{x^{2}+1} \right \rfloor⌊x2+11⌋.
Notations:
R∗\mathbb R ^* R∗ denotes the set of non-zero real numbers.
⌊⋅⌋ \lfloor \cdot \rfloor ⌊⋅⌋ denotes the floor function.
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