Question

найти область определения функции y=$sqrt{x+1} + sqrt[6]{ x^{2} +2x-3}$

Answer 1

$left { {{x+1 geq 0} atop {x^2+2x-3 geq 0}} right. ; ; left { {{x geq -1} atop {(x-1)(x+3) geq 0}} right. ; ; left { {{x in [-1,+infty)} atop {xin (-infty ,-3]U[1,+infty)}} right.; to ; xin [1,+infty)$