20 setxunit
-8 5 setxrange
-5 4 setyrange
quadrillage
tracerepere
/f {
1 add dup mul neg 3 add
} def
{f} courbe
%{neg 1 sub} courbe
/fontsize 10 store
setTimesItalic
(x) xmax 0 dltext
(y) 0 ymax dltext
<tex>
$$
y = -x^2 -2x + 2
$$
</tex>
-3.5 dup f ultexlabel
|