一类含参数积分的一个估值不等式
An Inequalities for the Integral with a Parameter
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摘要: 设p>0且p≠1,对于含参数p的积分∫0xe-tpdt,我们确定出相应的实数α=α(p),β=β(p).使得不等式1-e-βxp1/p<1/Γ(1+1/p)∫0xe-tpdt<1-e-αxp1/p(x>0)恒成立.Abstract: let p≠1 be a positive number.As to exponential integral ∫0xe-tpdt,We determine all numbers α=α(p)andβ=β(p)such that the inequalities1-e-βxp1/p<1/Γ(1+1/p)∫0xe-tpdt<1-e-αxp1/p(x>0)are valid for all x>0.