函数知识的出现是数学史上的一个重大飞跃,它架起了代数与几何之间的一座桥梁,开阔了数学的解题思路,充分体现了数学的数形结合思想。函数知识有许多应用,它也是初中数学的一个重要内容,在历年中考试题中占有相当大的比值。下面,笔者利用函数思想对最值问题进行探究。 The appearance of function knowledge is a major leap forward in the history of mathematics. It bridges the gap between algebra and geometry, widens the mathematical problem-solving ideas, and fully embodies the idea of ​​mathematics and mathematical integration. There are many applications of function knowledge, it is also an important content of junior high school mathematics, and it occupies a considerable ratio in the mid-year exam questions. In the following, the author uses function thinking to explore the issue of the most value.