论文部分内容阅读
如何根据正弦型函数 y =Asin(ωx +φ)的图像正确地写出它的解析式 ,是中学数学教学中的一个难点问题 .难点的关键在于初相φ的确定 ,拜读文 [1 ]后深受启迪 ,张老师从图像出发给出了一种确定初相φ的方法 ,但没有从理论上给予论述 ,问题的研究不够深入 ,本文就这一问题作进一
It is a difficult problem in the teaching of middle school mathematics how to correctly write its analytical expression from the image of the sine function y = Asin(ωx +φ). The key to the difficulty lies in the determination of the initial phase φ, after reading the text [1] Deeply inspired, Teacher Zhang gave a method for determining the initial phase φ based on the image, but he did not give a theoretical explanation. The study of the problem is not deep enough. This article has made a breakthrough on this issue.