Distance focale:

Taille de l'objet:

Distance OA:

Realation de Descartes:

Formule de grandissement:

Z = (-4, 0)
Z' = (20, 0)
a_1 = Line(Z, Z')
f = 5.6 (slider from 0 to 20, step 0.1)
O = (0, 0)
F: (-f, 0)
F': (f, 0)
b = OrthogonalLine(O, a_1)
a = 2.3 (slider from -10 to 10, step 0.1)
d = -9.2 (slider from -20 to 10, step 0.1)
A: (d, 0)
B: (x(A), a)
u = Vector(A, B)
c = Line(B, F)
C = Intersect(c, b)
e = Line(C, a_1)
g = Line(B, O)
h = Line(B, a_1)
D = Intersect(b, h)
i = Line(D, F')
B' = Intersect(g, i)
j = OrthogonalLine(B', a_1)
A' = Intersect(a_1, j)
v = Vector(A', B')
E = Point(b)
G = Point(b)
w = Vector(G, E)
z = Vector(E, G)
k = Ray(D, B)
l = Ray(D, F')
m = Ray(C, F)
n = Ray(C, B')
H = Point(k)
I = Point(k)
p = Vector(H, I)
J = Point(g)
K = Point(g)
q = Vector(J, K)
L = Point(m)
M = Point(m)
r = Vector(L, M)
o: 1 / (x(F') - x(O))
s: 1 / (x(A') - x(O))
t: 1 / (x(A) - x(O))
b_1: s - t
c_1: y(B') / y(B)
d_1: x(A') / x(A)
texte7: "\frac{\overline{A'B'}}{\overline{AB}}=" * c_1
texte8: "\frac{\overline{OA'}}{\overline{OA}}=" * d_1
texte4: "\frac{1}{\overline{OF'}}=" * o
texte5: "\frac{1}{\overline{OA'}}-\frac{1}{\overline{OA}}=" * b_1