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通过观察函数 y=Asin(ωx+)的图象(一般都是其中某一段)求解析式,属于三角函数中的常规题.我挑选了一道习题布置给学生当做作业.例如图1,试写出函数y=Asin(ωx+)(<π/2)的解析式.
By looking at the image of the function y=Asin(ωx+) (usually a segment of it), the analytical equation is a regular question in the trigonometric function. I chose an exercise to be assigned to the student as an assignment. For example, Figure 1 The analytical formula of function y=Asin(ωx+)(<π/2).