Chapter 13 - Vector Functions - 13.1 Vector Functions and Space Curves - 13.1 Exercises - Page 894: 35

See explanation

To graph the curve $r(t)$ in Geogebra use: $\bf Curve(sin(3t)cos(t),t/4,sin(3t)sin(t),t,-2pi,2pi)$ The domain $-2\pi \leq t \leq 2\pi$ is kinda arbitrary since $t$ can be anything we just want to show the behavior of the curve.