早教吧作业答案频道 -->数学-->
求1-1/2+1/4-1/8+1/16-1/32+1/64-1/128+1/128+1/256-1/512的值
题目详情
▼优质解答
答案和解析
=1/2+1/8+1/32+1/128+1/512=256/512+64/512+16/512+4/512+1/512=341/512 设s=1-1/2+1/4-1/8+1/16-1/32+1/64-1/128+1/128+1/256-1/512 2s=2-1+1/2-1/4+1/8-1/16+1/32-1/64+1/128-1/256两个算式相加3S=2-1/512S=(1024-...
看了 求1-1/2+1/4-1/8...的网友还看了以下：