在平面直角坐标系中,A(a,0),D(0,b),a≠0,C(0,﹣2),∠CAB=90°,D是AB的中点,当A在x轴上移动时,a与b满足的关系式为_____ ;点B的轨迹E的方程为_____ .
18-19高二上·浙江温州·期末 查看更多[2]
更新时间:2019-02-14 10:25:46
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