用交轨法做先求出与直线y=(√2/2)x+1+√3距离等于√2的点的轨迹｜c-1-√3|/√(1/2+1)=√2,解得：c=1或1+2√3所以与直线y=(√2/2)x+1+√3距离等于√2的轨迹为：y=(√2/2)x+1和y=(√2/2)x+1+2√3,于是原问题可转化为求...