元方季方 praising the two brothers both having ability and political integrity
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例句与用法
For the special case one of original equations contains only two unknowns , these two variables can be sampled firstly , and then introduced into the other two 3 - variable equations . the real solutions obtained are spread along the cylindrical contour curve , so that a two dimensional graph which is easy to observe is generated . the corresponding spatial points of intersection are found through the points of intersection of the two curves in this graph 对于方程组中有一个二元方程的特殊情况,还可首先给该二元赋值,然后代入另外两个三元方程,将求得的实数解沿该二元方程的柱面轮廓线展开,得到便于观察的二维图形,通过该两条交线的交点找到其相应的空间交点。