e之帕德近似函數之討論

Abstract

In this paper, we establish a lower bound as well as an upper bound for the error of the (n-μ,n)-th Padé approximant to e^-z. Moreover, we find a condition under which {Rn-μ,n(x)}n=1 ∞ can not converge geometrically to e^-z on [0,+∞).