[tex]\left \{ {{y=2} \atop {x=2}} \right. \int\limits^a_b {x} \, dx \left[\begin{array}{ccc}1&2&3\\4&5&6\\7&8&9\end{array}\right] \frac{x}{y} x^{2} \frac{x}{y} \beta \pi \sqrt[n]{x} \geq \pi \frac{x}{y} \geq \left[\begin{array}{ccc}1&2&3\\4&5&6\\7&8&9\end{array}\right] \neq \int\limits^a_b {x} \, dx \pi \alpha \int\limits^a_b {x} \, dx \sqrt[n]{x} \frac{x}{y} \pi \pi[/tex]⊆π∨⊃∴⇆∴απ≠∨³∨