For each of the following parametric curves plot approximately its trace T (if 7: R > R", then the trace of 7 is the set of all 7(t) E R", With t e R. Assuming that the curve gives the motion of a particle, describe the motion in words. (a) \"y: R > R3, W) = (19,122) (b) (p: R > R3, cp(t) = (cos2 t,sin2 t) (c) w: R > R3, (t) = (cos2 t,sint)