四条直线l1:x+3y-15=0 L2:kx-y-6=0 L3:x+5y=0 L4:y=0 问当k的多少时四边形有一个外接圆,求该外接圆.解析给的是设过该四边形的四个顶点的二次曲线系方程式(x+3y-15)(x+5y)+拉米大(kx-y-6)y=0 .这么设的话
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/21 12:55:03
![四条直线l1:x+3y-15=0 L2:kx-y-6=0 L3:x+5y=0 L4:y=0 问当k的多少时四边形有一个外接圆,求该外接圆.解析给的是设过该四边形的四个顶点的二次曲线系方程式(x+3y-15)(x+5y)+拉米大(kx-y-6)y=0 .这么设的话](/uploads/image/z/15184577-65-7.jpg?t=%E5%9B%9B%E6%9D%A1%E7%9B%B4%E7%BA%BFl1%3Ax%2B3y-15%3D0+L2%3Akx-y-6%3D0+L3%3Ax%2B5y%3D0+L4%3Ay%3D0+%E9%97%AE%E5%BD%93k%E7%9A%84%E5%A4%9A%E5%B0%91%E6%97%B6%E5%9B%9B%E8%BE%B9%E5%BD%A2%E6%9C%89%E4%B8%80%E4%B8%AA%E5%A4%96%E6%8E%A5%E5%9C%86%2C%E6%B1%82%E8%AF%A5%E5%A4%96%E6%8E%A5%E5%9C%86.%E8%A7%A3%E6%9E%90%E7%BB%99%E7%9A%84%E6%98%AF%E8%AE%BE%E8%BF%87%E8%AF%A5%E5%9B%9B%E8%BE%B9%E5%BD%A2%E7%9A%84%E5%9B%9B%E4%B8%AA%E9%A1%B6%E7%82%B9%E7%9A%84%E4%BA%8C%E6%AC%A1%E6%9B%B2%E7%BA%BF%E7%B3%BB%E6%96%B9%E7%A8%8B%E5%BC%8F%EF%BC%88x%2B3y-15%29%28x%2B5y%29%2B%E6%8B%89%E7%B1%B3%E5%A4%A7%EF%BC%88kx-y-6%29y%3D0+.%E8%BF%99%E4%B9%88%E8%AE%BE%E7%9A%84%E8%AF%9D)
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