\[\boxed{\mathbf{1103.ОК\ ГДЗ - домашка\ на}\ 5}\]
\[C = 2\pi R \Longrightarrow R = \frac{C}{2\pi}.\]
\[\textbf{а)}\ C_{1} = kC \Longrightarrow R_{1} = \frac{\text{kC}}{2\pi}:\]
\[\frac{R_{1}}{R} = \frac{kC \bullet 2\pi}{2\pi \bullet C} = k - увеличится\ \]
\[в\ \text{k\ }раз;\]
\[\textbf{б)}\ C_{1} = \frac{C}{k} \Longrightarrow R_{1} = \frac{C}{k \bullet 2\pi}:\]
\[\frac{R_{1}}{R} = \frac{C \bullet 2\pi}{k \bullet 2\pi \bullet C} = \frac{1}{k} -\]
\[уменьшится\ в\ \text{k\ }раз.\]