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本文举三例说明用多元一次方程组或不等式组来解决一些实际应用问题. 1.营养最佳调配例1 甲、乙、丙三种食物的维生素A、D含量及成本如下表
In this paper, three cases are illustrated to solve some practical problems by using a multiple primary equation group or an inequality group. 1. The contents and costs of vitamin A and D in the three best foods for foods A, B, and C are shown in the following table.