1/2+1/4+1/8+1//16+1/32……1//128
1/2+1/4+1/8+1/16+……+1/128+1/256=?
1+2+4+8+16+32+64+128+256……加64次等于几 1+2+4+8+16+32+64+128+256……
计算:1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256+……+1/2^n
1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256……+1/2^n
1/2+1/4+1/8+1/16+……1/128=?
1+2+4+8+16+32+64+128+……2的n次方等于多少?
1/2+1/4+1/8+1/16+1/32……+1/1024
2/1+4/1+8/1+16/1+32/1……+1024/1=
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
2,-4,8,-16,32,-64… 1 -1,2,-4,8,-16,32…