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                            # 第 1 章：數字

> 原文： [http://math.mit.edu/~djk/calculus_beginners/chapter01/contents.html](http://math.mit.edu/~djk/calculus_beginners/chapter01/contents.html)

## 介紹

我們將討論各種數字的屬性。

## 話題

[1.1 什么是數字？有理數](section01.html)

[1.2 小數和實數](section02.html)

[1.3 復數](section03.html)

*   [復數運算](complement01.html)

*   [復數的幾何表示](complement01.html#geometric-representations-of-complex-numbers)

[1.4 可數集](section04.html)
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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