The range formula of inequality solution set is the range formula of inequality, that is, taking the same as the same. There is no solution to the size, and the size is taken. The premise of using the range formula of inequality solution set is that two inequalities in a linear inequality group with two inequalities finally become the simplest form, that is, they have found their own solution sets.

Explanation of range formula of inequality solution set

The same size means that both inequalities are greater than the sign, and the largest number means that the larger of the two numbers is taken as the solution set of the inequality group. Taking the same small as the smallest means that both inequalities are smaller than the sign, and taking the smallest means taking the smaller of the two numbers as the solution set of the inequality group.

There is no solution to big and small things. The first big in large and medium indicates that the first inequality is greater than the sign, and the second big indicates that the first inequality is the larger of the two numbers on the right. Similarly, the first small in the small means that the second inequality is smaller than the sign, and the second little finger is the smaller of the two numbers on the right side of the second inequality. If this is the case, the original set of inequalities has no solution.

Small size and large size take the middle, large size means that the first inequality is greater than the symbol, and the first inequality of little finger is that the right side is the smaller of the two numbers. Similarly, small, medium and small means that the second inequality is less than the sign, and large means that the right side of the second inequality is the larger of the two numbers. If so, then the solution set of the original inequality group is the part between two numbers A and B.