摘要
本文给出π(x)的比较容易计算且与lix等价的最佳渐近式:R(X)=x/logx sum from k=0 to (log-x/e^(1/2)) k!/(logx)~k 并且给出变数有限时的指数积分,对数积分的近似计算公式。
This article presents not only the π(x)'s easier caculation, but the approaching formula,which is equal to 'lix' R(x)=x/logx,sum from k=0 to(log x/e^(1/2)) kl1/(logx)~k,it also provides exponent's integral, when variability is limited and the approximate caculation formation for the logarithm's integral.
出处
《阜阳师范学院学报（自然科学版）》
1994年第2期92-99,共8页
Journal of Fuyang Normal University(Natural Science)
