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Gaokao Math Practice Question

10. 双曲线 $C: \frac{x^{2}}{4}-\frac{y^{2}}{2}=1$ 的右焦点为 $F$, 点 $P$ 在 $C$ 的一条渐近线上, $O$ 为坐标原点, 若 $|P O|=|P F|$, 则 $\triangle P F O$ 的面积为

  1. A.$\frac{3 \sqrt{2}}{4}$
  2. B.$\frac{3 \sqrt{2}}{2}$
  3. C.$\frac{\mathrm{x}_{1}}{\mathrm{x}_{2}}$
  4. D.$3 \sqrt{2}$

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