共50条信息
已知两圆\(C_{1}\):\((x-4)^{2}+y^{2}=169\),\(C_{2}\):\((x+4)^{2}+y^{2}=9\),动圆在圆\(C_{1}\)内部且和圆\(C_{1}\)相内切,和圆\(C_{2}\)相外切,则动圆圆心\(M\)的轨迹方程为\((\) \()\)
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