导数、变化率是数学史上一个重要的转折,它是沟通初高等数学知识的桥梁,由此数学发展到了变量数学的新阶段,开辟了数学研究的崭新天地,是具有划时代意义的里程碑。导数作为高中数学新教材中的新增内容,为高中数学注入了新的活力。由于导数具有很强 Derivatives and change rates are an important turning point in the history of mathematics. It is a bridge for the communication of early and advanced mathematics. From this, mathematics has evolved into a new stage of variable mathematics and opened up a new world of mathematics research. It is an epoch-making milestone. As a new content in the new mathematics textbooks for high schools, the derivative has injected new vitality into high school mathematics. Because the derivative is very strong