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一、不等式的解题思路不等式的解题思路,从本质上来看,体现的是等价转化的思路,可以使用解方程式的思路,将同解不等式逐渐转换成为简化的不等式,因而保持同解变形就成为解不等式应遵循的主要原则.在解不等式的过程中不但要能够熟练准确地解一元一次不等式和一元二次不等式,而且要保证每步转化都要是等价变形.在解不等式时,常常出现不等式组的形式,因此要求不等式组的解集,就是求各不等式解集的交集.在解不等式组时,首先应求出组内各个不等式的解集,然后利用数轴的性质取其交集.
First, the inequality problem solving ideas Inequality problem solving ideas, in essence, is reflected in the idea of equivalent conversion, you can use the idea of solving equations, the inequalities with the solution gradually transformed into a simplified inequality, and thus maintain the same deformation It becomes the main principle that the solution inequality should follow.It is not only necessary to be able to solve the unary inequality and the univariate inequity well and accurately in the process of solving inequality but also to ensure that each transformation must be equivalent to deformation.In the solution of inequality, The form of inequality group appears, therefore, the solution set of inequality group is the intersection of solution sets of inequality.In the solution of inequality group, the solution set of each inequality in the group should be obtained firstly, and then the intersection of several inequalities is taken.