%28.4527 setxunit %% 10 mm
28 setxunit
0 8 setxrange
0 3.5 setyrange
%[1 1 .5 .5 .1 .1] {orange} Quadrillage
%tracerepere marks
/A {1 2 } def
/u1 3 def
/u2 0.5 def
/u {u1 u2} def
/M {A u addv} def
/hu1 u1 1.5 mul def
/hu2 u2 1.5 mul def
/hu {hu1 hu2} def
/hM {A hu addv} def
A M droite
A point
M point
hM point
$A$
A ultexlabel
$M$
M ultexlabel
$h(M)$
hM uctexlabel
/v1 u2 4 div def
/vv2 u1 4 div def
/v2 -1 vv2 mul def
/v {v1 v2} def
/tA {A v addv} def
/thM {hM v addv} def
tA thM (->) line
$\overrightarrow{Ah(M)} = \alpha \overrightarrow{AM}$
5.3 0.8 ultexlabel {10}