graphics(
    line_parametric_2d(
        2 * cos(u) + 5 * cos(2 * u / 3),
        2 * sin(u) - 5 * sin(2 * u / 3),
        (u, 0, 6 * pi)
    ),
    aspect="equal"
)
# Expected:
## Plot object containing:
## [0]: parametric cartesian line: (5*cos(2*u/3) + 2*cos(u), -5*sin(2*u/3) + 2*sin(u)) for u over (0.0, 18.84955592153876)