de cuc hay ve logarit

Gi¸o Viªn NguyÔn V¨n Quý Trêng THPT TÜnh Gia 3 Ph¬ng tr×nh Logarit Gi¸o Viªn NguyÔn V¨n Quý Trêng THPT TÜnh Gia 3 3 6 2 2 6 4 2 2 2 1 2 2 2 4 2 4 2 (9 6) (4.3 6) 2 2 log 5 7 log log log ( 1) 1,5 (3 1) (3 3) 3 3 (8 9) 3 ( 1) ( 1) ( 1) ( 1) 2 2 2 2 32 1. 1 log log 2. 36 0 3.4 2.3 4.log lg 5.log log 2 6.log 2 7.log log log log 1 8.3 l log x x x x x x x x x x x x x x x x x x x x x x x + − − + + + − + + + + − + + + − + + = − = − = = = = + = + + = 2 2 89 25 ( ) 2 2 5 12 ( ) 4 12 8 2 2 ( 1) ( 1) 2 4 16 4 4 ( 1) ( 1) 2 4 1 ( ) (4 15.2 27) 4.2 3 2 2 (3.2 1) 2 lg10 lg lg(100 ) og 9. log log 2 11.( 4) log 2log ( 4) log 2log 7 12.log log 0 6 13.log 2log 14.log 2 1 15.4 6 2.3 16 x x x x x x x x x x x x x x x x x x x x x x − − − − − − − + + − − = − − = − − − + = = = + − = 8 4 2 2 2 2 2 4 2 3 2 ( 3) ( 1) (4 ) 4 2 2 3 3 3 3 9 (3 1) ( 1) 2 2 2 ( 3) (3 3 1) (3 1) 5 4 ( 1) 1 ( 1) ( 1) 2 16 2 4 log 1 1 . log log log 2 4 17.2log log 3log 0 1 18.log 2 log log 19.log log 3 20.log log log log 2 21.(2 2) (2 x x x x x x x x x x x x x x x x x x x x x + − − + + + + + + + + + − + − + + = + + = + = + = + = + + + − 2 1 log 2 ( 1) (6 5) 7 (5 1) 6 2( 1) ( 1) 3 3 3 (3 3) (11.3 9) 5 5 5 2) 1 22.7 6log 1 23.6 3log 2 1 24.( 2) log ( 4)log 16 0 25.( 1) log log log x x x x x x x x x x x x x x + − − + + + + − = + = + = + + + + − − = − + = . Gi¸o Viªn NguyÔn V¨n Quý Trêng THPT TÜnh Gia 3 Ph¬ng tr×nh Logarit Gi¸o Viªn NguyÔn V¨n Quý Trêng THPT TÜnh Gia 3 3 6 2 2 6 4 2 2 2 1