Question

log9(x+3,5)<1/2 решите неравенство пожалуйста

Answer 1

$log_{9}(x+3,5)<\frac{1}{2} \\\\\left \{ {{x+3,5>0} \atop {x+3,5<9^{\frac{1}{2}}}} \right.\\\\\left \{ {{x>-3,5} \atop {x+3,5<3}} \right.\\\\\left \{ {{x>-3,5} \atop {x<-0,5}} \right. \\\\Otvet:\boxed{ x\in(-3,5;-0,5)}$