1/2+1/4+1/8+1/16+1/32+1/64怎么算
问题描述:
1/2+1/4+1/8+1/16+1/32+1/64怎么算
答
运用等比数列s=a1[1-(q)n]/(1-q)=(1/2)[1-(1/2)5]/(1-1/2)=1-(1/2)5=1-1/32=31/32
1/2+1/4+1/8+1/16+1/32+1/64怎么算
运用等比数列s=a1[1-(q)n]/(1-q)=(1/2)[1-(1/2)5]/(1-1/2)=1-(1/2)5=1-1/32=31/32