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1本单元重、难点及方法指导1)本单元重点知识:通过本单元的学习,需要重点掌握以下知识:直线的倾斜角和斜率的概念以及它们之间的关系;直线方程的五种形式;两条直线位置关系的判定方法;两条直线所成角与点到直线距离的计算方法;用简单线性规划的办法求一些函数的最值;曲线和方程
1 Unit weight, difficulty and method guidance 1) The key knowledge of this unit: Through the study of this unit, it is necessary to grasp the following knowledge: the concept of the inclination and slope of the straight line and the relationship between them; the five forms of the linear equation; The method of determining the positional relationship between two straight lines; the calculation method of the angle formed by two straight lines and the distance from the point to the straight line; the simplest linear programming method is used to find the maximum value of some functions; the curves and equations