题目内容
到点C(3,-2)的距离等于5的轨迹方程为 ( )
A (x-3)2 + (y + 2)2 = 5 B (x-3)2 + (y + 2)2 =" 25"
C (x + 3)2 + (y-2)2 = 5 D (x + 3)2 + (y-2)2 = 25
A (x-3)2 + (y + 2)2 = 5 B (x-3)2 + (y + 2)2 =" 25"
C (x + 3)2 + (y-2)2 = 5 D (x + 3)2 + (y-2)2 = 25
B
本题考查轨迹方程的求法。由:得:=25.
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