1+2/1+4/1+8/1+.+64/1+128/1=
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1+2/1+4/1+8/1+.+64/1+128/1=1+2/1+4/1+8/1+.+64/1+128/1=1+2/1+4/1+8/1+.+64/1+128/1=1+2/1+4/1+8/1+.+64/
1+2/1+4/1+8/1+.+64/1+128/1=
1+2/1+4/1+8/1+.+64/1+128/1=
1+2/1+4/1+8/1+.+64/1+128/1=
1+2/1+4/1+8/1+.+64/1+128/1
是首项为1,公比为1/2的数列
1+2/1+4/1+8/1+.+64/1+128/1
=(1-(1/2)^8)/(1-1/2)
=255/128
1/2 1/4 1/8 1/16 1/32 1/64 1/128 1/256 =(1-1/2)=1-1/256 =255/256
1+1/2+1/4+1/8+...1/64=?
1 1/2 1/8 1/64
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
1/2-1/4-1/8-1/16-1/32-1/64-1/128-1/256
1/2+1/4+1/8+1/16+1/32+1/64+1/128+.+1/1024
1-2/1-4/1-8/1-16/1-32/1-64/1-128/1
1/2-1/4-1/-1/8-1/16-1/32-1/64----------1/1024
1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256
(2+1)({2}^{2}+1)({2}^{4}+1)({2}^{8}+1).({2}^{64}+1)+1
简便计算1/2+1/4+1/8+1/16+1/32+1/64+1/128
1-1/2-1/4-1/8-1/16-1/32-1/64
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
计算:1/2+1/4+1/8+1/16+1/64+1/128+1/256
1+1/2+1/4+1/8+1/16+1/32+1/64
2/1+4/1+8/1+16/1+32/1+64/1+128/1=?
1/2+1/4+1/8+1/16+32/1+1/128没有1/64简算