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三角函數 描點作圖 新版
Author:
宋政蒲
Topic:
Cosine
,
Sine
,
Trigonometric Functions
,
Trigonometry
按下">"即再多畫1點;按下"<"即擦去(退回)1點;按下">>"即一次多畫10點為新增;按下">|"則一次畫完右半段(或左半段)的點。
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