Présentation de 772.jps

/syracuse/bbgraf/tmp/772.jpg
25 setxunit 7.5 setborder 90 setangle_repere -10 10 setxrange -10 10 setyrange 1 1 settkstep .1 .1 setsubtkstep 1 1 setmkstep ticks subticks marks traceaxes axesarrow /R {settvar #rpn# 2+(1/cos(t)) } def 0 62 pi mul settrange gsave .75 setlinewidth continu bleu (R) courbepolar grestore