1+1/2+2/2+1/2+1/3+2/3+3/3+2/3+1/3+……+1/100+2/100+……+100/100+99/100+……+1/100=?计算过程及规律
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![1+1/2+2/2+1/2+1/3+2/3+3/3+2/3+1/3+……+1/100+2/100+……+100/100+99/100+……+1/100=?计算过程及规律](/uploads/image/z/358577-17-7.jpg?t=1%2B1%2F2%2B2%2F2%2B1%2F2%2B1%2F3%2B2%2F3%2B3%2F3%2B2%2F3%2B1%2F3%2B%E2%80%A6%E2%80%A6%2B1%2F100%2B2%2F100%2B%E2%80%A6%E2%80%A6%2B100%2F100%2B99%2F100%2B%E2%80%A6%E2%80%A6%2B1%2F100%3D%3F%E8%AE%A1%E7%AE%97%E8%BF%87%E7%A8%8B%E5%8F%8A%E8%A7%84%E5%BE%8B)
1+1/2+2/2+1/2+1/3+2/3+3/3+2/3+1/3+……+1/100+2/100+……+100/100+99/100+……+1/100=?计算过程及规律
1+1/2+2/2+1/2+1/3+2/3+3/3+2/3+1/3+……+1/100+2/100+……+100/100+99/100+……+1/100=?计算过程及规律
1+1/2+2/2+1/2+1/3+2/3+3/3+2/3+1/3+……+1/100+2/100+……+100/100+99/100+……+1/100=?计算过程及规律
=2*(1+1/2+2/2+1/3+2/3+3/3+...+1/100+2/100+...+100/100)-(1+2/2+3/3+...+100/100)
=2*(1+3/2+6/3+10/4+15/5+...101/2)-100
= (2+3+..+101)-100 =5050
2 1 -2 -3
(1-1/2^2)(1-1/3^2)(1-1/4^2).(1-1/2009^2),
(1+1/2+1/3+...
1 2 1 2 () () ()()
1+1/2^2
(1-1/2^2)*(1-1/3^2)*(1-1/4^2)*.*(1-1/2002^2)*(1-1/2003^2)
1+1+1+2+2×3
证明 1+1/1+1/1*2+1/1*2*3+.+1/1*2*3*...*n
计算:-2×(-1/2)^2+|-(-2)|^3-(-1/2)
计算:1+2^(-1)+2^(-2)+2^(-3)+...+2^(-2010)
1+2^1+2^2+2^3+.+2^2008=
证明1+1/2^2;+1/3^2;+1/4^2+1/n^2小于2
1/1+2+1/1+2+3+1/1+2+3+4.1/1+2+3.2011
1/(2^3)+1/(2^3+1)+1/(2^3+2)+1/(2^3+3)+...+1/(2^4-1)
1、求证:1/1^2+1/2^2+1/3^2+……+1/2008^2
下面这段Matlab中BP神经网络模型的代码中的LP.lr=0.P=[1,2,1,3,1,2,3,2,2,1,3,2,3,2;2,1,3,2,1,1,3,3,2,1,3,2,3,2;1,1,3,3,1,2,2,3,2,1,3,2,2,2;1,2,1,3,1,2,1,1,1,1,1,2,2,2;2,2,1,1,1,2,1,2,2,2,3,2,3,2;1,3,1,3,1,2,1,2,1,2,2,1,1,3;2,3,1,3,1,2,1,2
1,1,1,2,2,2,3,3,3,填三阶幻方
(2-1)(2+1)(2^2+1)(2^3+1)(2^4+1).(2^32+1)+1的个位数是多少?