Question

нужно очень срочно решение

Answer 1

$left { {{sinx textgreater 0} atop {cosx leq 0}} right. ; to ; xin 2; chetvert; to frac{pi}{2}+2pi n textless x textless pi +2pi n,; nin Z\\\ left { {{(frac{1}{3})^{x} textgreater frac{1}{243} atop {2^{x} textgreater 4}} right. ; left { {{(frac{1}{3})^{x} textgreater (frac{1}{3})^5} atop {2^{x} textgreater 2^2}} right. \\ left { {{x textless 5} atop {x textgreater 2}} right. ; ; Rightarrow ; ; 2 textless x textless 5\\oo$