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函数y=Asin(ωx+φ)的图象变换比较复杂,它包括相位变换、周期变换和振幅变换,其中相位变换是所有变换中的重点和难点。只有掌握好相位变换知识才能正确地解决其它变换问题,本文意在给初学者如何学好这一知识而提出自己的一点初浅见解。
The image transformation of the function y=Asin(ωx+φ) is more complicated. It includes phase transformation, periodic transformation and amplitude transformation, and phase transformation is the key and difficult point in all transformations. Only by mastering the knowledge of phase transformation can we correctly solve other transformation problems. This article is intended to give beginners a good idea on how to learn this knowledge.