1-1/2-1/4-1/8-1/16-1/32=?1/2+1/6+1/12+1/20+1/
1/2+1/4+1/8+1/16+1/32+.
求和:1/2+1/4+1/8+1/16+1/32+1/64+.+1/1024=?
1-2/1-4/1-8/1-16/1-32/1-64/1=多少?
1-2/1-4/1-8/1-16/1-32/1-64/1=?简便计算
计算:(1+1/2^32)(1+1/2^16)(1+1/6^8)(1+1/2^4)(1+1/2^2)(1+1/2) .
(1/2+1/4+1/6+1/8)-(1/3+1/6+1/9+1/12)+(1/4+1/8+1/12+1/16)-(1/
(1/2+1/4+1/6+1/8)-(1/3+1/6+1/9+1/12)+(1/4+1/8+1/12+1/16)-(1/
1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256
1/2-1/4-1/8-1/16-1/32-1/64-1/128-1/256
1/2-1/4-1/8-16/1-32/1-64/1-128/1-256/1
1+1/2+1/4+1/8-1/16+1/32+1/64-1/128+1/256=?简便运算
1/2+1/4+1/8+1/16+1/32+1/64+1/128=1-1/128 找规律