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高中数学课本第一册三角函数的教材中,给出了求形如:f(x)=A sin(ωχ+φ)(ω>0,A≠0)的函数的周期 T 的一般方法:T=(2π/ω)。“周期”概念是教学中的难
In the textbook for trigonometric functions in the first volume of the high school mathematics textbook, a general method for the period T of a function such as: f(x)=A sin(ωχ+φ)(ω>0, A≠0) is given: T =(2π/ω). The concept of “cycle” is difficult in teaching