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tuannguyen771
2 năm trước
Trong mặt phẳng tọa độ Oxy ,cho A(1;-2) ,B(-3;1) ,C(1,-5) a. Viết phương trình tổng quát đường thẳng AB b. Viết phương trình tổng quát đường trung tuyến AM c. Viết phương trình tổng quát đường trung trực BC d. Viết phương trình đường tròn có tâm A đi qua B
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