考研 发表于 2019-5-4 15:03:35

2017考研数学(二)真题解析:选择题第2题答案解析

  2017考研数学(二)真题中选择题第二题,在考试的时候,因为是选择题,所以同学们可以用特殊举例法,选出正确选项,显然这个函数可以举例抛物线方程。如果不用举例法的话,我们也可以证明出来。
       
          2017考研数学(二)真题解析:选择题第2题答案解析
       
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
       
          考场上做这个题的时候,很多同学看到条件二阶导小于零,会想到用凹凸性着手,但是选择题我们只需要把答案选出来即可,否则在这道选择题上会花很多时间的。
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查看完整版本: 2017考研数学(二)真题解析:选择题第2题答案解析