=(1-1/2)(1+1/2)(1+1/2的平方) (1+1/4四次方)(1+1/4八次方)(1+1/2十六次方)除以(1-1/2)+(1+1/2三十一次)
=(1-1/2²)(1+1/2²)(1+1/4四次方)(1+1/4八次方)(1+1/2十六次方)除以(1-1/2)+(1+1/2三十一次)
=……
=(1-1/2^32)×2+(1+1/2^31)
=3
=(1-1/2)(1+1/2)(1+1/2的平方) (1+1/4四次方)(1+1/4八次方)(1+1/2十六次方)除以(1-1/2)+(1+1/2三十一次)
=(1-1/2²)(1+1/2²)(1+1/4四次方)(1+1/4八次方)(1+1/2十六次方)除以(1-1/2)+(1+1/2三十一次)
=……
=(1-1/2^32)×2+(1+1/2^31)
=3