(3/4)^б > 1 (1/3) ..............

1'1/3  = 4/3 = (3/4)^(-1) > 0  ⇒ (3/4)^б : (3/4)^(-1) >1(3/4)^(б-(-1)) >1  ⇔   (3/4)^(б+1) >1(3/4) <1  ⇒  б+1<0   ⇒  б< -1