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Some refinements of inequalities for circular functions
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نویسنده
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sun z. ,zhu l.
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منبع
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journal of applied mathematics - 2011 - دوره : 2011 - شماره : 0
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چکیده
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We give new lower bound and upper bound for papenfuss-bach inequality and improve ruehr-shafer inequality by providing a new lower bound. copyright © 2011 zhengjie sun and ling zhu.
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آدرس
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department of mathematics,zhejiang gongshang university,zhejiang, China, department of mathematics,zhejiang gongshang university,zhejiang, China
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Authors
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