求与直线2X+Y=0的距离为根号5/5的直线方程?
求与直线2X+Y=0的距离为根号5/5的直线方程?
数学人气:639 ℃时间:2019-10-11 21:31:28
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首先,与直线2x +y =0 相距√5/5的直线必然与直线2x +y =0平行,可设为直线2x +y +c =0,再根据平行线间距离公式d =|C1-C2|/√(A²+B²)知所求直线的参数c 满足|c|=1即c =1或c =-1 从而所求直线为直线2x ...
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