文档介绍：初一数学知识点下册(Junior mathematics knowledge 2)
Junior mathematics knowledge 2. Txt - two boats you pedal, you have really nif inequality: inequality on both sides (or divide) multiplied by the same negative, not equal to the direction of change.
The solution set 3. inequality: make inequality holds the value of the unknown, called the solution of inequality: inequality set of all solutions, called the solution set of this inequality.
4. A: inequality contains only one unknown, and the number of unknowns is 1, the coefficient is not equal to zero the inequality, called a inequality: its standard form is ax+b > 0 or ax+b < 0 (a = 0).
A solution of 5. yuan a inequality: one yuan a solution inequality and methods for solving one equation is similar, but must pay attention to the application of the 3 properties of inequality: note: said in a long solution set of inequalities, should pay attention to air circle and real point.
yuan for a group of inequalities: Several Inequalities with the same unknowns a inequality which, called a group of inequalities: note: ab > 0? Or?:
AB < 0?? or ab=0; a=0 or b=0; a=m??.
yuan for a solution set of inequalities and solution: all these solutions set a inequality of the public part, this is called a inequalities set: solving a linear inequality, should calculate the solution set all the inequalities in inequality, then determine the axis the solu