福建省福州市八县（市）一中2018 2019学年高一数学下学期期中联考试题

..........................................................................................1222、(1)证明:.................................................2由可得..................................................................................................................3(2)解:(i)依题意,当且时,且满足上式则当时,................................................................4当时,由可得,..................................................................................6当时,满足上式............................................................................................................7(ii)依题意,,当时,,猜想................................8由(1)可得,则即..................................................................................................11............................................................................12