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《Studies in College Mathematics》 2018-05
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Solving Problems with Geometric Property of Convex Function

SUN Yuzhu;School of Mathematical Sciences,Yangzhou University;  
In this paper,we note first that the graph of a convex function f lies above a straight line with the slope in the interval[f′_-(x_0),f′_+(x_0)].Based on this observation,we provide simple proofs to some mathematical analysis test problems of the postgraduate entrance examination.
【Fund】: 扬州大学大学生学术科技创新基金资助项目(20170246);扬州大学创新创业教育改革项目(yzucx2016-2C)
【CateGory Index】: O174.13
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