Решите неравенство: log0,4 (1,9 x - 1,3) ≥ - 1

Log 0.4+log (1.9x-1.3) > = - 1

log (1.9x-1.3) > = - 1 - log 0.4

log (1.9x-1.3) > = - log 10 - log 0.4

log (1.9x-1.3) > = - log 4

log (1.9x-1.3) > = log 1/4

1.9x - 1.3 >=0.25

1.9 x > = 1.55

x > = 1.55/1.9

x > = 0.8