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动圆与两圆外切与内切(2)
Author:
张中强
,
蔡永志
动圆与两圆外切与内切(2)
GeoGebra
已知圆A的方程为(x+2)²+y²=1,圆B的方程为(x-2)²+y²=1,动圆P和圆A,圆B一个内切,一个外切,求动点P的轨迹方程?
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