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（本小題滿分12分）

已知函數(shù)f (x)是正比例函數(shù)，函數(shù)g (x)是反比例函數(shù)，且f(1)＝1，g(1)＝2，

(1)求函數(shù)f (x)和g(x)；

(2)判斷函數(shù)f (x)＋g(x)的奇偶性．

(3)求函數(shù)f (x)＋g(x)在(0，]上的最小值．

（本小題滿分12分）
已知函數(shù)f (x)是正比例函數(shù)，函數(shù)g (x)是反比例函數(shù)，且f(1)＝1，g(1)＝2，
(1)求函數(shù)f (x)和g(x)；
(2)判斷函數(shù)f (x)＋g(x)的奇偶性．
(3)求函數(shù)f (x)＋g(x)在(0，]上的最小值．