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如图,直线y=kx+b过点A(5,0)和点C,反比例函数y=(x<0)过点D,作BD∥x轴交y轴于点B(0,﹣3),且BD=OC,tan∠OAC=. (1)求反比例函数y=(x<0)和直线y=kx...
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教案备课库《2017年河北省廊坊市广阳区中考数学二模试卷》真题及答案
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