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国际课程提前学Alevel数学三角函数6:振幅与周期

今天的国际课程提前学,给大家带来的是:振幅与周期,请大家一起来学习吧!(后附视频解读哦~)

Amplitude and Period  

振幅与周期

https://mmbiz.qpic.cn/mmbiz_png/y62uKLYkM8cicSZ22c3xhV5iauDzbQojZetUiabqKcqzib1eAWYiakicamAF40UWcN6dC5xEia6IZI3fvT8aBrv7Picojw/640?wx_fmt=png

https://mmbiz.qpic.cn/mmbiz_jpg/y62uKLYkM8cicSZ22c3xhV5iauDzbQojZeaaFc5gE4ljsFrsuRLqEoclLgMaUlG6ElEz3lpdHGv2BFiaUSia33MI6A/640?wx_fmt=jpeg

https://mmbiz.qpic.cn/mmbiz_png/y62uKLYkM8cicSZ22c3xhV5iauDzbQojZe2c2CP9RiaJxgYRn9mHwk6PWGxrb0dTthImy63fKMRez6bxlMW6jI9Gw/640?wx_fmt=png

https://mmbiz.qpic.cn/mmbiz_png/y62uKLYkM8cicSZ22c3xhV5iauDzbQojZe1E6fPrQnoUm5QwDmoQAghnRDyWpllmy34g4Rzicr7MhUzHB4XCCHx1Q/640?wx_fmt=png

https://mmbiz.qpic.cn/mmbiz_png/y62uKLYkM8cicSZ22c3xhV5iauDzbQojZeV5JvajUVcdlAvl7DGdIljJeSnibjYFPP7Qh4uKVLqicnNvzCyicjpZaBg/640?wx_fmt=png

https://mmbiz.qpic.cn/mmbiz_png/y62uKLYkM8cicSZ22c3xhV5iauDzbQojZelO9prHzUJ6GndV4IWGTuYDybhJCv1C9icpbxU1YSFteaKcGgbdkm4EQ/640?wx_fmt=png

https://mmbiz.qpic.cn/mmbiz_png/y62uKLYkM8cicSZ22c3xhV5iauDzbQojZexx5dWya8BJzDIHhzhLLyLjUCN1yDTAr5SoqpY21mPLB4hO5LlEckwg/640?wx_fmt=png

Example

Find the amplitude and period of, and sketch its graph.

Solution:

https://mmbiz.qpic.cn/mmbiz_png/y62uKLYkM8cicSZ22c3xhV5iauDzbQojZeKp1p6iaL1mYguV470FAmic5zoLbesr1Knc5eiaFKa6Fm1cHmoKo4DOhRg/640?wx_fmt=png

https://mmbiz.qpic.cn/mmbiz_png/y62uKLYkM8cicSZ22c3xhV5iauDzbQojZeick6sGwKYzXmmqQFotjFUMzJjicJOBQj5CsCrWRnNAtlhfibEC9ZGicq7A/640?wx_fmt=png