(1/2+1)*(1/3+1)*(1/4+1)*(1/5+1)*……*(1/100+1)
来源:百度知道 编辑:UC知道 时间:2024/09/22 11:13:11
(1/2+1)*(1/3+1)*(1/4+1)*(1/5+1)*……*(1/100+1)
=(3/2)*(4/3)*(5/4)*(6/5)*……*(101/100)
=101/2
3/2 * 4/3 * …… 100/99 *101/100 =101/2 = 50.5
(1/2+1)*(1/3+1)*(1/4+1)*(1/5+1)*……*(1/100+1)
=(3/2)(4/3)(5/4)(6/5)……(100/99)(101/100)
=(1/2)(3/3)(4/4)(5/5)……(100/100)*101
=101/2
3/2*4/3*5/4*6/5........*101/100=101/2
原式=3/2*4/3*5/4*...*101/100=101/2
上式=3/2*4/3*5/4......101/100=101/2=50.5
(1/2005-1)(1/2004-1)........(1/3-1)(1/2-1)
1+1/(1+2)+1/(1+2+3)+...+1/(1+2+3+...+100)
1+1/(1+2)+1/(1+2+3)+-------+1/(1+2+3+----+100)
1+1/1+2+1/1+2+3+...+1/1+2+3...+2000
1+1/1+2+1/1+2+3.........+1/1+2+3.....100
1*(1/1+2)*(1/1+2+3)*~~~*(1/1+2+~~~2005)=?
(1-1/2)(1-1/3)(1-1/4)(1-1/5).....(1-1/1000)
(1+1/2)(1+1/2^2)(1+1/2^4)(1+1/2^8)
(1-1/2^2)*(1-1/3^2)*(1-1/4^2).......(1-1/100^2)
1+1/2+1+1/3+1+1/4+......+1/100=?