... ( ) ( ) ( ) ( ) ( ) ( ) ( )( ) 2 2 2 2 2 4 2 1log 2 2.8 3 .2 1 2. 16 2. 4 1log 4 2 1 log 2. 16 2. 4 1 2. 16 2. 4 1 4 2 1log 4 2 1 4 2 1 log 2. 16 2. 4 1 2. 16 2. 4 1 2 x xx x xx xx x x x x x x xx ... = + + + - =0 ,25 ( ) 2 2 2 3 2 ,( ) 3 3a b cd A Pa b c - + + = = + +. M2a b = - 2 2 2 25 2 3 5 2 3 55b cb c b cb c + ị = + = + +0 ,25 ( ) 2 2 2 4 4 0 2 0 2b bc c b c c b ... (2. 16 2. 4 1) 4 2 1 2. 16 2. 4 1 2. 16 3.4 2 0x x x x x x x x x x xf f - + = - + - + = - + - + =0 ,25 www.DeThiThuDaiHoc.comfacebook.com/ThiThuDaiHoc 2 2 0 2 101 33 1 2 log 2 21 3 2 2xxxxxx...