gistfile1.txt

Polar:
- r = 1 - sin(t)                                                 (cardioid)
- r = (sin(t) sqrt(|cos(t)|)) / (sin(t) + 7/5) - 2 sin(t) + 2

Cartesian:
- (x^2 + y^2 - 1)^3 - x^2 y^3 = 0
- (y - 2(|x| + x^2 - 6) / 3(|x| + x^2 + 2))^2 + x^2 = 36
- x^2 + (y - cubert(x^2))^2 = 1
- glued curve
  - x: -2 to 2
  - top: y = sqrt(1 - (|x| - 1)^2)
  - bottom: y = -3 sqrt(1 - sqrt(|x|) / sqrt(2))
- y = x^(2/3) +- sqrt(1 - x^2)
- (5y / 4 - sqrt(|x|))^2 + x^2 = 1
- (sqrt(1 - (|x / 5| - 1)^2) - y / 5 + 3/4)(cos^-1(1 - |x / 5|) - y / 5 + 3/4 - pi) = 0

Both:
- system
  - x = sin(t) cos(t) log(|r|)
  - y = |r|^0.3 sqrt(cos(t))
- system
  - x = 16 sin^3(t)
  - y = 13 cos(t) - 5 cos(2r) - 2 cos(3r) - cos(4r)

3D! :
- x^2 + 9 y^2 / 4 + z^2 - 1 - x^2 z^3 - 9 y^2 z^3 / 80 = 0
- x^2 + 9 y^2 / 4 + z^2 - 1 - x^2 z^3 - 9 y^2 z^3 / 200 = 0
- (2 x^2 + y^2 + z^2 - 1)^3 - x^2 z^3 / 10 - y^2 z^3 = 0