论文部分内容阅读
直线平分固定的三角形的面积归纳起来主要有两种类型:(1)动直线平分固定的三角形的面积;(2)定直线平分固定的三角形的面积.下面通过实例谈一谈这两种类型的具体情况.1动直线平分固定的三角形的面积1.1动直线平分固定的三角形的面积,求动直线在y轴上的截距的取值范围例1(2013年高考全国新课标卷Ⅱ·理12)已知点A(-1,0),B(1,0),C(0,1),直线y=ax+b(a>
There are mainly two types of area for the triangle fixed to a straight line: (1) the area of a triangle fixed by moving a straight line, (2) the area of a fixed triangle fixed by a straight line, and the following two examples Specific circumstances .1 dynamic straight bisect the fixed triangle area 1.1 moving straight line bisect the fixed triangular area, seeking straight line in the y-axis intercept value range Example 1 12) Knowing the points A (-1,0), B (1,0), C (0,1), the line y = ax + b (a>