题目

已知数列满足，求数列的通项公式。 答案：解：两边除以，得 ， 则， 故因此， 则 解析:本题解题的关键是把递推关系式转化为，进而求出+…+，即得数列的通项公式，最后再求数列的通项公式。In _________ 1990’s, he was still so poor ________ student that nobody could imagine how rich he would be in the future.A．/; aB．the; aC． /; /D．the; /