Circles · 第 13 题

Circles · 原库模块 1 · Q13 原库参考解析

The equation \( x^{2}+(y−1)^{2}=49 \) represents circle A. Circle B is obtained by shifting circle A down 2 units in the xy-plane. Which of the following equations represents circle B?

Circles · 第 13 题

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