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方程是用等号连接表示相等关系的式子,不等式是用不等号连接表示不等关系的式子.表面上看,方程(组)与不等式(组)水火不容,势不两立,其实两者的关系并不象我们想象的那样不和谐.相反,很多时候方程(组)与不等式(组)团结互助,肝胆相照,出色地完成了一次又一次的艰巨任务.一、有些方程(组)问题可以转化为不等式(组)问题例1(2010年绵阳)有大小两种船,1艘大船与4艘小船一次可以载乘客46名,2艘大船与3艘小船一次可以载乘客57人.绵阳市仙
Equations are equations that use equal sign connections to represent equal relationships, and inequalities are equations that use unequaled connections to represent unequal relationships. On the surface, equations (groups) and inequalities (groups) are overwhelming and irreconcilable. In fact, the relationship between the two On the contrary, equations (groups) and inequalities (groups) work together solidarity with one another in a hefty manner, and do well one after another the arduous task. First, some equations (group) problems can be transformed into inequalities (Group) Problem Example 1 (Mianyang in 2010) There are two types of vessels, one large vessel and four small vessels which can carry 46 passengers at a time, two large vessels and three small boats which can carry 57 passengers at a time.