tn=1-an
则有t1=a1
==>a1=1/2
==>t1=1/2
则有tn=1-tn/t[n-1]
==>tn*t[n-1]=t[n-1]-tn
==>1/tn-1/t[n-1]=1
等差数列tn表示什么,麻烦给回复
tn=1-an
则有t1=a1
==>a1=1/2
==>t1=1/2
则有tn=1-tn/t[n-1]
==>tn*t[n-1]=t[n-1]-tn
==>1/tn-1/t[n-1]=1
等差数列tn表示tn一tn一1二d