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人一開始盲目追逐就沒有時間去思考,
更不可能將自己浮躁的心沉澱下來,
要培養優雅的氣質,首先必須學會「安靜」。

bugmens 發表於 2022-6-9 18:18

111陽明高中

 

bugmens 發表於 2022-6-9 18:18

13.
Consider the infinite geometric series \(\displaystyle \frac{1}{5}+\frac{1}{10}+\frac{1}{20}+\frac{1}{40}+\frac{1}{80}+\ldots\).
How do you graphically and algebraically explain to students what happens to \(S_n\) as \(n\) increases?

111.6.25補充
以下的圖出自
Proofs without Words: Exercises in Visual Thinking (Classroom Resource Materials) First Edition, Later Printing
[url]https://www.amazon.com/Proofs-without-Words-Exercises-Classroom/dp/0883857006[/url]

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