| 利用幂级数判别无理数 |
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| 引用本文： | 东洪平.利用幂级数判别无理数[J].甘肃高师学报,2009,14(5):92-92,137. |
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| 作者姓名： | 东洪平 |
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| 作者单位： | 陇南师范高等专科学校数学系,甘肃成县,742500 |
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| 摘 要： | 利用幂级数证明了d1/m,sin1/m,cos1/m（m∈Z,m≠0）都是无理数．
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| 关 键 词： | 幂级数 证明 无理数 |
Using Power Series Judge Irrational Number |
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| DONG Hong-Ping.Using Power Series Judge Irrational Number[J].Journal of Gansu Normal College,2009,14(5):92-92,137. |
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| Authors: | DONG Hong-Ping |
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| Institution: | DONG Hong-Ping(Department of Mathematics,Longnan Teachers College,Chengxian Gansu 742500) |
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| Abstract: | In this paper,we make use of the power series to prove e 1m,sin 1m,cos m1 (m∈Z,m≠0)is the irrational number. |
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| Keywords: | power series proof irrational number |
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