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我国是研究一次方程组最早的国家之一.公元三世纪,数学家刘徽曾对“方程”的含义作出过这样的解释:“程,课程也、群物众杂、各列其数、总列其实,令每行为率,二物者再程,三物者三程,皆为物数程之.并列为行、故谓之方程.”其中,“令每行为率”是按条件列等式的意思,“如物数程之”是说有几个未知数列几个等式.下列问题可用一次方程组解答:
China was one of the earliest countries to study a system of equations. In the 3rd century AD, mathematician Liu Huizeng explained the meaning of “equation”: “courses, courses, groups, and miscellaneous Number, total, in fact, so that each rate, the second object, three-way, three-way, all for the number of things. And listed as the line, so that the equation. ”Where, “ order per rate ”Is the meaning of the conditional column equation, “ such as the ”number of objects" is to say there are several equations of several unknown equations. The following problems can be solved with a system of equations: