Mathematics
Mathematics, 08.08.2021 19:30, sophiaa23

Trong mặt phẳng tọa độ Oxy cho hai đường tròn C và C' lần lượt có phương trình 2 2 x y y     4 5 0 và 2 2 x y x y      2 2 14 0. Biết rằng C là ảnh của C qua
phép đồng dạng tỉ số k, khi đó tỉ số k bằng

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Trong mặt phẳng tọa độ Oxy cho hai đường tròn C và C' lần lượt có phương trình 2 2 x y y     4...

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