GraphingCalculator 3.5;
Window 91 313 876 1434;
PaneDivider 248;
Slider -5 5;
SliderControlValue 19;
SliderMoving 1;
SliderVariable k;
SliderDirection -1;
2D.Scale 0.5 0.5 2 2;
2D.BottomLeft -8.09375 -15.46875;
Expr r=2+4*sin([k*theta]);