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01 微积分 - 极限

杨林伟发布时间：2019-09-06 15:27:11 ，浏览量：3

微积分是概数统计基础，概数统计则是DM&ML之必修课”，是有一定根据的，包括后续数理统计当中，如正态分布的概率密度函数中用到了相关定积分的知识，包括最小二乘法问题的相关探讨求证都用到了求偏导数的等概念，这些都是跟微积分相关的知识。

实上，古代数学中，单单无穷小、无穷大的概念就讨论了近200年，而后才由无限发展到极限的概念。

极限

极限又分为两部分：数列的极限 和 函数的极限。

数列的极限

定义: 如果 数列{xn} 与 常数a 有下列关系:对于任意给定的正数e (不论它多么小), 总存在 正整数N , 使得对于 n >N 时的一切 xn, 不等式 |xn-a |


    
        
            
                
                
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