题目内容
已知数列{an}满足a1=2,an+1=
(n∈N*),则a3=________,a1·a2·a3·…·a2014=________.
-
-6
(1)a2=
=-3,
a3=
=-
.
(2)求出a4=
,a5=2,可以发现
a5=a1,且a1·a2·a3·a4=1,
故a1·a2·a3·…·a2014=a1a2=2×(-3)=-6.
a3=
(2)求出a4=
a5=a1,且a1·a2·a3·a4=1,
故a1·a2·a3·…·a2014=a1a2=2×(-3)=-6.
练习册系列答案
相关题目