2. 設P (iog2x-1 ) ‧ (iog3y )2-2 ‧ (3iog2 x+α ) ‧ (log3y)+iog2x+1,試問:
(1) 當 a = 0,1≤x≤ 2,且 P 恆為正值時,此時 y 的範圍為何?