Présentation de 6300.jps

/syracuse/bbgraf/tmp/6300.jpg
25 setxunit 7.5 setborder -2 7 setxrange -5 5 setyrange jpegmode /a 2 def /b 2 def 1 1 settkstep .5 .5 setsubtkstep 2 2 setmkstep ticks subticks marks traceaxes axesarrow /R {settvar #rpn# b + 2 * a * Cos (t) } def 0 2 pi mul settrange gsave 0.75 setlinewidth continu bleu (R) courbepolar grestore