-2.5 5 setxrange
-0.5 3 setyrange

1 setxyrapport
60 setxunit
7.5 setborder
90 setangle_repere
-0.7 4 setxrange
-0.7 3 setyrange
1 1 settkstep
.5 .5 setsubtkstep
2 2 setmkstep
%ticks
%subticks
%marks
traceaxes
axesarrow

%unites
/f {setxvar
#rpn#   (7/10*x^2-41/20*x+37/20)
} def

/P {0.5 1} def
/R {1.5 0.35} def
/Q {3 2} def

setTimesItalic
(O) O [1.8 dup] drtext
(x) 3.7 0 [1.8 dup] drtext
(y) 0 2.7 [1.8 dup] ultext
(P) P [1.5 dup] dltext
(R) R [1.5 dup] dctext
(Q) Q [1.5 dup] crtext


[P Q R] points
gsave
   noir
   1 setlinewidth
   continu
0.15  3.5 {f} Courbe
grestore

gsave
1.5 setlinewidth
[P R] ligne
[P Q] ligne
[R Q] ligne
grestore

<latex>
$\rm{Abb}.\,6$
</latex>
-1.3 1.2 [2.0 dup] ultexlabel