25 setxunit
7.5 setborder
90 setangle_repere
2 -2 setxrange
1 setyrange
1 1 settkstep
.5 .5 setsubtkstep
1 1 setmkstep
ticks
subticks
marks
traceaxes
axesarrow
.75 setlinewidth
continu
magenta
/X {settvar
#rpn# t+1/t
} def
/Y {settvar
#rpn# (t*2)-t+1/t
} def
-4 4 {X} {Y} Courbeparam
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