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qu mian de qie ping mian de yi ge xing zhi
Author(s): 
Pages: 46-48
Year: Issue:  S2
Journal: Journal of Lingling Teachers College

Abstract: 拉格朗日证明了在每一点都有切线的连续曲线y=f(x)上,任意一个弦的两端点之间至少能找到曲线上一点,在这点曲线的切线与弦平行(如
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