%% auteur : gh
100 setxunit
-.8 3 setxrange
-0.5 3 setyrange
traceaxes
axesarrow
1.7 setlinewidth
/O {0 0} def
16 setfontsize
setTimesItalic
(O) O dltext
/f {setxvar x 0.75 mul 1 sub 1 x div add} def
/g {setxvar x 0.75 mul 1 sub} def
bleu
1.3 3 {f} Courbe
$$ \Gamma $$
3 3 [1.5 1.5] ultexlabel
%%
%%$$ t\to t_0 $$
%%
%%4.2 4.2 f [1.5 1.5] drtexlabel
0.7 setlinewidth
0.3 1.3 {f} Courbe
1 setlinewidth
rouge
-0.3 7 {g} Courbe
$$ y=ax+b $$
3 3 g [1.5 1.5] dltexlabel
noir
continu
/xt 2 def
/Mx {xt 0} def
/yt {xt f} def
/zt {xt g} def
/M {xt yt} def
/P {xt zt} def
/My {0 yt} def
/Py {0 zt} def
Mx M (-) line
M My (-) line
P Py (-) line
$$ M(t) $$
M [1.5 1.5] ultexlabel
$$ P(t) $$
P [1.5 1.5] crtexlabel
$$ x(t) $$
Mx [1.5 1.5] dctexlabel
$$ y(t) $$
My [1.5 1.5] cltexlabel
$$ ax(t)+b $$
Py [1.5 1.5] cltexlabel