Présentation de 1332.jps

/syracuse/bbgraf/tmp/1332.jpg
25 setxunit 7.5 setborder 90 setangle_repere -2 2 setxrange -2 2 setyrange 1 1 settkstep .5 .5 setsubtkstep 2 2 setmkstep ticks subticks marks traceaxes axesarrow /R {settvar #rpn# -1/(1+2*Cos(t)) } def 0 2 pi mul settrange gsave .75 setlinewidth continu bleu (R) courbepolar grestore