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对于某些方程运用常规解法解起来十分麻烦,但如果引入辅助未知数构造方程组来解,能收到出奇制胜的效果,下面仅举两例说明.
For some equations, it is very troublesome to solve them by using conventional solutions. However, if we introduce the auxiliary unknowns to construct the equations to solve the problem, we can receive surprising results. Here are just two examples.