[Ether]

Originally Posted by Ether

So for r1=25, r2=5, and alpha=2*pi, you would get:

x = 25*exp(-0.11124453*t)*cos(t)
and
y = 25*exp(-0.11124453*t)*sin(t)

I should have used my CAS.

x = 25*exp(-0.25615*t)*cos(t)

y = 25*exp(-0.25615*t)*sin(t)