$\vec{a}$

$\vec{b}$

$\vec{m}$

A = (-3, 3)
O = (0, 0)
a = Vector(O, A)
a1: x(a)
a2: y(a)
B = (5, 1)
b = Vector(O, B)
f = Segment(A, B)
M = Midpoint(A, B)
u = Vector(O, M)
v = Vector(A, M)
gL: -7
gR: 7
gU: -5
gO: 5