求数列Sn=1/1!+1/2!+1/3!+1/4!+……+1/n!
(2018-11-05 15:53:16)求数列Sn=1/1!+1/2!+1/3!+1/4!+……+1/n!
解:将e^x进行泰勒公式展开,e^x=1+x/1!+x^2/2!+x^3/3!+x^4/4!+………+1/n!
当x=1代入,得e =1+1+1/2!+1/3!+1/4!+………+1/n!
所以, +1+1/2!+1/3!+1/4!+………+1/n! =(e -1)
求数列Sn=1/1!+1/2!+1/3!+1/4!+……+1/n!
解:将e^x进行泰勒公式展开,e^x=1+x/1!+x^2/2!+x^3/3!+x^4/4!+………+1/n!
当x=1代入,得e =1+1+1/2!+1/3!+1/4!+………+1/n!
所以, +1+1/2!+1/3!+1/4!+………+1/n! =(e -1)