在高中数学的学习中,我们经常会遇到形如y=x+(a/x)(a∈R~+)的函数,从形式上看它是由一个正比例函数和一个反比例函数复合而成.对它的研究每次都会引起同学们的极大兴趣,从图像和性质上看,它又是那么的美丽与和谐,因此倍受数学老师的青睐,虽然教材上 In high school mathematics learning, we often encounter a function of the form y = x + (a / x) (a∈R ~ +), formally it is a combination of a proportional function and an inverse function. The research on it will arouse great interest of students every time. From the image and the nature, it is so beautiful and harmonious, so it is much favored by math teachers.