Question

егэ по математике №15

Answer 1

$log_3^2x +2 textgreater 3log_3x \ x textgreater 0 \ log_3^2x -3log_3x + 2 textgreater 0 \ log_3x = t \ t^2 - 3t + 2 textgreater 0 \ D = 9 -8 =1 \ t_1 = frac{3+1}{2} = 2 \ t_2 = frac{3-1}{2} = 1 \ log_3x = 1 \ x=3 \ log_3x = 2 \ x=9$