1\2+1\4+1\8+1\16+1\32+1\64+1\128=

1/2+1/4+1/8+1/16+1/32+1/64+1/128=1-1/128 找规律 128+64+32+16+8+4+2+1+2/1+4/1+8/1+16/1+32/1=? 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 简便计算1/2+1/4+1/8+1/16+1/32+1/64+1/128 1/2+1/4+1/8+1/16+32/1+1/128没有1/64简算 1/2+1/4+1/8+1/16+1/32+1/64+1/128 1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256= 2/1+4/1+8/1+16/1+32/1+64/1+128/1+256/1=? 计算：1-2\1-4\1-8\1-16\1-32\1-64\1-128\1=?