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根据正弦型函数f(x)=Asin(wx+φ)的图象求其解析式是教学中的一个难点问题,难点在于如何根据图象准确地确定φ角的值,下面将介绍如何来确定φ角的值。
According to the sine function f (x) = Asin (wx + φ) of the image and its analytical formula is a difficult problem in teaching, the difficulty lies in how to accurately determine the value of φ angle based on the image, the following describes how to determine The value of φ angle.