![\left[\begin{array}{ccc}1&2&3\\4&5&6\\7&8&9\end{array}\right] \int\limits^a_b {x} \, dx \geq \sqrt{x} \left \{ {{y=2} \atop {x=2}} \right. \frac{x}{y} \alpha \alpha \alpha =\beta](/tpl/images/2237/4217/0b4cd.png)
Help, please
A: 2
B: -2
C: 1/2
D:-1/2
...
Answers: 1
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