LocusEquation Command
 LocusEquation( <Locus> )

Calculates the equation of a Locus and plots this as an Implicit Curve.
 LocusEquation( <Point Creating Locus Line Q>, <Point P> )

Calculates the equation of a Locus by using inputs tracer point Q and mover point P, and plots this as an Implicit Curve.
Let us construct a parabola as a locus: Create free Points A and B, and Line d lying through them (this will be
the directrix of the parabola). Create free point F for the focus. Now create P on Line d (the mover point), then
create line p as a perpendicular line to d through P. Also create line b as perpendicular bisector of Line
Segment FP. Finally, point Q (the point creating locus line) is to be created as intersection of Lines p and b.
Now LocusEquation(Q,P)
will find and plot the exact equation of the locus.
 LocusEquation( <Boolean Expression>, <Free Point> )

Calculates the locus of the free point such that the boolean condition is satisified.
LocusEquation(AreCollinear(A, B, C), A)
for free points A, B, C calculates the set of positions of A that
make A, B and C collinear—i.e. a line through B and C.
