摘要:平面直角坐标系中.O为坐标原点.已知两点A.若点C满足OC = OA + OB.其中.∈R.且+=1.则点C的轨迹方程为 A.(x-1)2 + (y-2)2 =5 B.3x+2y-11=0 C.2x-y=0 D.x+2y-5=0

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