已知三条直线L1:mx-y+m=0,L2:x-my-m(m+1)=0,L3:(m+1)x-y+(m+1)=0.:把他们围成三角形ABC,(一),不论m取何值时,三角形总有一个顶点为定点(二)当m取何值时,三角形面积最大,最小值?并求出最大最小值
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/16 23:57:10
![已知三条直线L1:mx-y+m=0,L2:x-my-m(m+1)=0,L3:(m+1)x-y+(m+1)=0.:把他们围成三角形ABC,(一),不论m取何值时,三角形总有一个顶点为定点(二)当m取何值时,三角形面积最大,最小值?并求出最大最小值](/uploads/image/z/14268027-3-7.jpg?t=%E5%B7%B2%E7%9F%A5%E4%B8%89%E6%9D%A1%E7%9B%B4%E7%BA%BFL1%EF%BC%9Amx-y%2Bm%3D0%2CL2%3Ax-my-m%28m%2B1%29%3D0%2CL3%3A%28m%2B1%29x-y%2B%28m%2B1%29%3D0.%3A%E6%8A%8A%E4%BB%96%E4%BB%AC%E5%9B%B4%E6%88%90%E4%B8%89%E8%A7%92%E5%BD%A2ABC%2C%EF%BC%88%E4%B8%80%EF%BC%89%2C%E4%B8%8D%E8%AE%BAm%E5%8F%96%E4%BD%95%E5%80%BC%E6%97%B6%2C%E4%B8%89%E8%A7%92%E5%BD%A2%E6%80%BB%E6%9C%89%E4%B8%80%E4%B8%AA%E9%A1%B6%E7%82%B9%E4%B8%BA%E5%AE%9A%E7%82%B9%EF%BC%88%E4%BA%8C%EF%BC%89%E5%BD%93m%E5%8F%96%E4%BD%95%E5%80%BC%E6%97%B6%2C%E4%B8%89%E8%A7%92%E5%BD%A2%E9%9D%A2%E7%A7%AF%E6%9C%80%E5%A4%A7%2C%E6%9C%80%E5%B0%8F%E5%80%BC%3F%E5%B9%B6%E6%B1%82%E5%87%BA%E6%9C%80%E5%A4%A7%E6%9C%80%E5%B0%8F%E5%80%BC)
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