(a) The parametric equations are
and
and interval is
.


The curve equation in cartesian form is
.
(b) 
Consider
.

,
Hence the
-values in the interval
.
The direction of the curve will move toward the point
, but it will not reach the point.
Graph:
\Graph the parametric equations
and
:
.gif\")
(a) Equation of the curve is
.
(b)
\Graph of the parametric equations
and
:
.gif\")