广义积分integeral from n= 1 to ∞(e<sup>-x<sup>2</sup></sup>dx)是概率论中常见的一个积分,通常称为概率积分。在高等数学课程的教学中,概率积分的值等于π<sup>1/2</sup>/2是用二重积分的方...广义积分integeral from n= 1 to ∞(e<sup>-x<sup>2</sup></sup>dx)是概率论中常见的一个积分,通常称为概率积分。在高等数学课程的教学中,概率积分的值等于π<sup>1/2</sup>/2是用二重积分的方法证明的。本文给出了用一元函数微积分的证明。展开更多
The Official Journal of the International Union Against Tuberculosis and Lung DiseaseEDITORIAL BOARDEditor-in-ChiefMICHAEL D ISEMAN National Jewish Center for Immunology and Respiratory Medicine 1400 Jackson Street, D...The Official Journal of the International Union Against Tuberculosis and Lung DiseaseEDITORIAL BOARDEditor-in-ChiefMICHAEL D ISEMAN National Jewish Center for Immunology and Respiratory Medicine 1400 Jackson Street, Denver CO 80206 USA.Fax:(303)398展开更多
文摘The Official Journal of the International Union Against Tuberculosis and Lung DiseaseEDITORIAL BOARDEditor-in-ChiefMICHAEL D ISEMAN National Jewish Center for Immunology and Respiratory Medicine 1400 Jackson Street, Denver CO 80206 USA.Fax:(303)398