Question

Найти область определения функции $y = \sqrt{2x - 4} + \frac{2x + 3}{\sqrt{10 - 2,5 x} }$.

Answer 1

$\left \{ {{2x-4\geq0} \atop {10-2,5x>0}} \right. \\\\\left \{ {{2x\geq4} \atop {-2,5x>-10}} \right. \\\\\left \{ {{x\geq2} \atop {x<4}} \right.\\\\Otvet:\boxed{x\in[2;4)}$