| 三次函数的实根与极值 |
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| 引用本文： | 朱萍. 三次函数的实根与极值[J]. 青海师范大学学报(自然科学版), 1995, 0(3) |
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| 作者姓名： | 朱萍 |
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| 作者单位： | 青海师范大学附中 |
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| 摘 要： | 本文用初等的方法研究了定义在实数集上的三次函数存在重根的条件，并且讨论了各种特殊的三次函数的实根问题，还研究了具有实重根的三次函数在特定的实数区间上的最值问题．
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| 关 键 词： | 三次函数，实根，极值 |
THE REAL ROOT AND MAXIMUM VALUE OF THE CUBIC FUNCTION |
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| Zhu Ping. THE REAL ROOT AND MAXIMUM VALUE OF THE CUBIC FUNCTION[J]. Journal of Qinghai Normal University(Natural Science Edition), 1995, 0(3) |
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| Authors: | Zhu Ping |
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| Affiliation: | the Attached Middle School of Qinghai Normal University |
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| Abstract: | This article has a preliminary research on the conditions of the duplicate roots existing in the cubic functions defined on the real number collection.It also has a discussinn on the issue of the real root in various special cubic functions and on the issue of the maximum value of the cubic functions,which have real duplicate roots,in the inter-regions of the specified real numbers. |
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| Keywords: | cubic function real root maximum value |
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