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このノートについて
Senior High 1年生
在當時的我不懂什麼叫作顏色，所以本筆記看起來有點單調😂
*絕對值的運算有三個方法：
1.分段討論
2.平方
3.數線解題
如果喜歡的話，歡迎按讚👍👍
不清楚的歡迎至以下留言👇
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