Présentation de 349.jps

/syracuse/bbgraf/albums/belles_02/349.jpg
60 setxunit 7.5 setborder 90 setangle_repere -1.3 1.3 setxrange -1.3 1.3 setyrange 1 1 settkstep .5 .5 setsubtkstep 1 1 setmkstep ticks subticks marks traceaxes axesarrow 1.75 setlinewidth continu bleu /X {settvar #rpn# Sin(t)*Sin(2*t) + Cos(t)*Cos(2*t)/2 } def /Y {settvar #rpn# Sin(2*t)*Cos(t)/2 - Cos(2*t)*Sin(t) } def pi 2 div 3 pi mul 2 div {X} {Y} Courbeparam pointilles 3 pi mul 2 div 5 pi mul 2 div {X} {Y} Courbeparam noir continu /XX {settvar #rpn# Cos(t) } def /YY {settvar #rpn# Sin(t) } def 0.75 setlinewidth 0 2 pi mul {XX} {YY} Courbeparam