在我们平时做题的过程中,其实大部分题目都同时存在常规解法和优化解法.常规解法更容易想到,更容易入手,只是运算量稍大了些;优化解法计算快捷,准确度也高,只是有时很难想到.因此,同学们平时应该加强优化解题思维的训练,掌握一些优化策略,这样就会在考试中懂得如何简化解答过程,从而节约做题时间,有效提高解题效率. In the process of doing our usual questions, in fact, most of the problems exist both conventional solutions and optimized solutions. Routine solutions are easier to think of and easier to get started with, but the amount of calculation is a bit larger; the optimized solution is faster and more accurate. But sometimes it is difficult to think. Therefore, students should usually strengthen the training of the optimization problem-solving thinking, master some optimization strategies, so that they will understand how to simplify the process of the answer in the exam, thus saving time and improving the efficiency of problem-solving.