讨论双参数问题,是不等式学习中的难点,遇到问题往往感到无从着手.笔者通过构造图形,寻找静点作为切入点,能使这类问题的解决变得简单明了.现结合具体实例介绍这类问题的探求过程. Discussing the double-parameter problem is a difficult point in inequality learning. It often feels incomprehensible to encounter problems. By constructing graphs and looking for a static point as an entry point, the author can make the solution of such problems simple and clear. Now introduce a specific example. The search process for class problems.