This is LaTeX code:
[latex]
f: \langle 0, 1\rangle \rightarrow \langle 0, 3 \rangle, \quad f(x) = x; \\ g: \langle 0, 3\rangle \rightarrow \langle 0, 1 \rangle, \quad g(x) = \frac{x+5}{10};
[/latex]