1/2+1/4+1/8+1/16+***+1/128+1/256=?
1/2+1/4+1/8+1/16+……+1/128+1/256=?
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+1/256
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
2\1+4\1+8\1+16\1+64\1+128\1+256\1+512\1
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=?
1/2+1/4+1/8+1/16+1/64+1/128+1/256+1/512=多少
计算:1/2+1/4+1/8+1/16+1/64+1/128+1/256
简便计算1/2+1/4+1/8+1/16+.+1/128+1/256
1-(1/2)-(1/4)-(1/8)-(1/16)-(1/32)-(1/64)-(1/128)-(1/256)