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三角函数的图象是三角函数性质的直观反映,我们不仅要能由函数解析式迅速准确地画出其图象,而且还要能依据图象来确定其解析式·本文拟对由图写式问题中参数A、k、ω、φ的求法作一些探讨,仅大家参考·1明确各个参数对图象的制约作用,建立科学规范的求解流程一般地,我们应首先?
The image of a trigonometric function is an intuitive reflection of the nature of the trigonometric function. We must not only draw its image quickly and accurately from the function analytical formula, but also determine the analytical formula based on the image. The parameters A, k, ω, and φ in the problem are discussed. We only refer to 1 to determine the constraints of each parameter on the image and establish a scientific and standardized solution flow. Generally, should we first?