22: Symmetry: Since both x and y are odd functions, the part
of the curve for t negative is exactly the same as for t
positive, just run in the opposite direction. Thus it is enough to
consider only t from
Intercepts:
Limits:
Due to the oscillation in x, no asymptote possible at t
infinity.
Picture:
Next investigate directions in which the curve goes and mononoticity of the resulting graph, inclusing "interesting" points.