Sharpening and generalizations of Shafer-Fink's double inequality for the arc sine function
英文摘要：
In this paper, we sharpen and generalize Shafer-Fink's double inequality for the arc sine function.
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λ方法在Shafer-Fink不等式上的应用
An application of lambda-method on Shafer-Fink's inequality
本文应用Mitrinovic-Vasic的λ方法改进Fink不等式，并研究了反正弦函数的Shafer不等式。
cs.NAmath.CAmath.NA
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