So it seems at this point to find where the graph would intersect itself, we would ask what value for t would give us 2 sets of identical x,y coordinates?
Thank you for the help! I can't figure what that equation would be ( I can see one involving arccos and substitution but I think that would be a dead end.)
I thought maybe finding the derivative dy/dx for the parametric eqn and realizing that at the point of intersection the 2 slopes would be...
x = 2 − π cos t
y = 2t − π sin t
−π ≤ t < π
I understand how to eliminate parameter using sin^2 + cos^2 = 1.
I can't figure out how to deal with the "2t" in the y equation, if you solve for sin(t) and square, you get
((2t-y)/π )^2 which leaves the parameter. Is there a way to get it into the...