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☆基础篇 第一课时有向线段与定比分点 诊断检测 理解有向线段的数量、长度,点P分P1P2所成的比并能活用定比分点公式是学好解几起点,你站在起点上了吗?请做如何诊断练习: 一、选择题 1.设点P在有向线段AB的延长线上,P分AB所成的比为λ,则()(上海试题) (A)λ<-1.(B)-1<λ<0. (C)0<λ<1.(D)λ>1. 2.直线l经过点A(-5,-3)、B(-1,0)及第一象限内的点C,记点C分AB所成的比为λ则() (A)λ<-1.(B)-1<λ<0. (C)-5<λ<-1.(D)λ<-5或-1<λ<0.
☆ Fundamental Chapter 1 There is a line segment and a point-of-spot diagnostic test to understand the number and length of directed segments, the ratio of P points P1P2 and the ability to use a fixed score point formula is a good starting point to learn a good solution, you stand on the starting point How do you do the diagnosis and practice? 1. Multiple choice questions 1. Set the point P on the extension line of the directed line segment AB. The ratio of the P minute AB is λ, then () (Shanghai Question) (A)λ< -1.(B)-1<λ<0. (C)0<λ<1.(D)λ>1. 2. Line l passes through point A(-5,-3), B(-1,0) And the point C in the first quadrant, the ratio of the point C to the point AB is λ () (A)λ<-1. (B)-1<λ<0. (C)-5<λ< -1. (D) λ<-5 or -1<λ<0.