Question

ДАЮ 29 БАЛЛОВ
Решите 2 любых задания

Answer 1

$1); ; y=sqrt{2x-12}; ,\\OOF:; ; 2x-12 geq 0; ,; ; x geq 6\\xin [, 6,+infty )\\2); ; y=sqrt{9-4x}+ sqrt{11x-23}\\OOF:; ; left { {{9-4x geq 0} atop {11x-23 geq 0}} right. ; left { {{x leq frac{9}{4}} atop {x geq frac{23}{11}}} right. ; left { {{x leq 2,25} atop {x geq 2frac{1}{11}}} right. ; ; to ; ; xin [, 2frac{1}{11};, 2,25, ]$

$3); ; frac{3x+5}{8} textless frac{5x-1}{4}; |cdot 8\\3x+5 textless 10x-2\\7 textless 7x\\7x textgreater 7\\x textgreater 1\\xin (7,+infty )$