1/2+1/4+1/8+1/16+1/32+1/64= 1+1/2+1/4+1/8+1/16+...+1/512=
1/2+1/4+1/8+1/16+1/32+1/64+.+1/512
1.1/2+1/4+1/8+1/16+1/32+1/64+……+1/512+1/1024=
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
1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256+1/512
2\1+4\1+8\1+16\1+64\1+128\1+256\1+512\1
2/1+4/1+8/1+16/1+32/1+64/1+128/1+256/1+512/1+1024/1=?
1/2+1/4+1/8+1/16+1/64+1/128+1/256+1/512=多少
1/2+1/4+1/8+1/16+1/32+1/64+.+1024=?
1/2+1/4+1/8+1/16+1/32+1/64=?
128+64+32+16+8+4+2+1+2/1+4/1+8/1+16/1+32/1=?