GraphingCalculator 3.5;
Window 99 144 884 1265;
PaneDivider 248;
Slider -5 5;
SliderSteps 10;
SliderVariable k;
2D.Scale 0.5 0.5 2 2;
2D.BottomLeft -9.34375 -15.5;
Expr r=2+4*cos([k*theta]);