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正弦函数y=Asin(ωx+φ)是三角函数的重要内容,历年来都是高考命题的热点.现结合去年全国各地高考试题,根据考查正弦函数的不同内容,进行分类,并探讨其各自不同解法.1.确定函数最小正周期正弦函数y=Asin(ωx+φ)的最小正周期为T=2π｜ω｜.【例1】已知函数y=12sinx+πA(A0)的
The sine function y=Asin(ωx+φ) is an important part of the trigonometric function. It has been a hot spot of college entrance examination propositions for many years. Now we combine the contents of the examination questions across the country last year. According to the different contents of the sine function, we classify them and discuss their respective differences. Solution 1. Determine the minimum positive periodic sine function of the function y = Asin(ωx + φ) The minimum positive period is T = 2π | ω |. [Example 1] Known function y = 12sinx + πA (A0)