已知：如图，在平面直角坐标系中，直线AB分别与轴交于点B、A，与反比例函数的图象...

已知：如图，在平面直角坐标系中，直线AB分别与轴交于点B、A，与反比例函数的图象分别交于点C、D，轴于点E，．

【解析】（1），．轴于点．，．··································································· （1分）点的坐标为．··················································································· （2分）设反比例函数的解析式为．将点的坐标代入，得，．··········································································································· （3分）该反比例函数的解析式为．··································································· （4分）（2），．························································································ （5分），，．························································································ （6分）设直线的解析式为．将点的坐标分别代入，得解得······································································································· （7分）直线的解析式为． …………（8分）【解析】略

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如图，⊙O的直径AB=4，C为圆周上一点，AC=2，过点C作⊙O的切线l，过点B作l的垂线BD，垂足为D，BD与⊙O交于点 E．