已知集合M={（x，y）|x+y=2}，N={（x，y）|x﹣y=4}，那么M∩N为_刷题宝

题干

已知集合M={（x，y）|x+y=2}，N={（x，y）|x﹣y=4}，那么M∩N为（）

A：x=3，y=﹣1

B：（3，﹣1）

C：{3，﹣1}

D：{（3，﹣1）}

上一题下一题 0.0难度选择题更新时间:2019-10-24 10:03:14

答案(点此获取答案解析）

D

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同类题5

\frac{x^{2}}{a_{1}^{2}} + \frac{y^{2}}{b_{1}^{2}} = 1 (a_{1} > b_{1} > 0)

的离心率为

\frac{\sqrt{2}}{2}

\frac{x^{2}}{a_{2}^{2}} - \frac{y^{2}}{b_{2}^{2}} = 1 (a_{2} > 0 ， b_{2} > 0)

与椭圆有相同的焦点

F_{1}

F_{2}

M

是两曲线的一个公共点，若

∠ F_{1} M F_{2} = 60 °

，则双典线的渐近线方程为（）

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