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
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