| 关于求导次序的可交换问题 |
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| 引用本文： | 赵小鹏. 关于求导次序的可交换问题[J]. 吉林化工学院学报, 2004, 21(3): 101-102 |
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| 作者姓名： | 赵小鹏 |
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| 作者单位： | 渭南师范学院,数学系,陕西,渭南,714000 |
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| 摘 要： | 以二元函数为例讨论了f″xy(x0,y0)=f″yx(x0,y0)成立的条件,给出了两个比现行教材更弱的f″xy(x0,y0)=f″yx(x0,y0)成立的充分条件.
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| 关 键 词： | 充分条件 求导次序 交换 |
| 文章编号： | 1007-2853(2004)03-0101-02 |
| 修稿时间： | 2003-09-18 |
On the question of changeable sequence of solving derivation |
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| ZHAO Xiao-peng. On the question of changeable sequence of solving derivation[J]. Journal of Jilin Institute of Chemical Technology, 2004, 21(3): 101-102 |
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| Authors: | ZHAO Xiao-peng |
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| Abstract: | Using a bivariable function as an example, the proper conditions of f″_(xy)(x_0,y_0)=f″_(yx)(x_0,y_0) are discussed, and two sufficient conditions of the function that are weaker than any conditions in actual teaching materials are given. |
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| Keywords: | sufficient condition sequence of solving the derivation exchange |
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