Question

найти область определения функции y=x-15/(Ln(5x+1))

Answer 1

$y= frac{x-15}{ln(5x+1)} left { {{ln(5x+1) neq 0} atop {5x+1 textgreater 0}} right. , left { {{5x+1 neq 1} atop {5x textgreater -1}} right. , left { {{5x neq 0} atop {x textgreater - frac{1}{5} }} right. , left { {{x neq 0} atop {x textgreater -0,2}} right.$

x∈(-0,2;0)∪(0;∞)