Даны функции g(x)=3/x-4x и ϕ(x)=2x-5. Сравните: g(1/2) и ϕ(4).

\[g(x) = \frac{3}{x} - 4x\ \ \ \ \ и\ \ \ \ \ \]

\[\varphi(x) = 2x - 5\]

\[g\left( \frac{1}{2} \right) = 6 - 2 = 4;\ \ \ \ \]

\[\varphi(4) = 8 - 5 = 3\]

\[g\left( \frac{1}{2} \right) > \varphi(4).\]