Ответ: [tex]f(x)= \frac{x+1}{x+2} \; \; ,\; \; \; g(x)=\sqrt{x}\\\\\\f(g(x))= \frac{\sqrt{x}+1}{\sqrt{x}+2} \\\\g(f(x))=\sqrt{ \frac{x+1}{x+2} }[/tex]