Présentation de 2347.jps

/syracuse/bbgraf/tmp/2347.jpg
25 setxunit 7.5 setborder 90 setangle_repere -5 5 setxrange -5 5 setyrange 1 1 settkstep .5 .5 setsubtkstep 2 2 setmkstep ticks subticks marks traceaxes axesarrow /R {settvar #rpn# Tan(2*t/3) } def 0 1 6 pi mul 1 add settrange gsave .75 setlinewidth continu bleu (R) courbepolar grestore