| 用微分方程定义三角函数 |
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| 引用本文： | 何敏中.用微分方程定义三角函数[J].首都师范大学学报(自然科学版),1991(3). |
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| 作者姓名： | 何敏中 |
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| 作者单位： | 北京师范学院数学系 |
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| 摘 要： | 本文用微分方程定义了三角函数,并由定义推出了它们的一系列基本性质,还证明了这一定义与用普通函数方程定义是等价的。
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| 关 键 词： | 线性微分方程组 三角函数 解的唯一性 |
Defining Trigonometric Function by Differential Equation |
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| He Minzhong.Defining Trigonometric Function by Differential Equation[J].Journal of Capital Normal University(Natural Science Edition),1991(3). |
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| Authors: | He Minzhong |
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| Abstract: | This paper defines trigonometric function by differential equation, anda series of basic properties are deduced from this definition. It is also provedthat this definition is equivalent to the one defined by ordinary functionalequation. |
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| Keywords: | linear differential equation system trigonometric function uniqueness of solution |
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