y = 1/3 √x^3 - √x, 9 ≤ x ≤ 36.
[m] y = e^x, x ∈ [0;1] [/m]
{ x = cos t + t sin t,
{ y = sin t - t cos t, oт t = 0 до t = π/4.
r = 1/φ от φ = 3/4 до φ = 4/3
9.3.110.
[m]
\begin{cases}
x = 4(t - \sin t), \\
y = 4(1 - \cos t),
\end{cases}
[/m]
[m]\frac{\pi}{2} \le t \le \frac{2\pi}{3}.[/m]
r = 3,5 (1 - cos φ).
{ x = 8 cos³ t,
{ y = 8 sin³ t, x = 1 (x ≥ 1).