初二数学题

显示全部楼层 · 2009-7-17 21:52:17

(1+1/2)(1+1/4)(1+1/16)(1+1/256) =(1-1/2)(1+1/2)(1+1/4)(1+1/16)(1+1/256) /(1-1/2)=(1-1/4)(1+1/4)(1+1/16)(1+1/256) /(1-1/2)=(1-1/16)(1+1/16)(1+1/256) /(1-1/2)=(1-1/256)(1+1/256)/(1-1/2)=(1-1/256^2)*2=65535/32768...

千问 · 2009-7-17 21:52:17

(1+1/2)(1+1/4)(1+1/16)(1+1/256) =(1+1/2)(1-1/2)(1+1/4)(1+1/16)(1+1/256)/(1-1/2)=(1-1/4)(1+1/4)(1+1/16)(1+1/256)*2=(1-1/16)(1+1/16)(1+1/256)*2=(1-1/256)(1+1/256)*2=(1-1/65...

千问 · 2009-7-17 21:52:17

（1+1/2)(1+1/4)(1+1/16)(1+1/256) =（1-1/2）（1+1/2)(1+1/4)(1+1/16)(1+1/256) /(1-1/2)=2(1-1/4)(1+1/4)(1+1/16)(1+1/256) =2(1-1/16)(1+1/16)(1+1/256) =2(1-1/256)(1+1/256)...

千问 · 2009-7-17 21:52:17

=2(1+1/2)(1-1/2)...后面的应该会了吧...