Un arbre de probas très artisanal
Les curseurs permettent de modifier l'aspect

$A$

$\overline{A}$

$\frac{100}{130 + n}$

$\frac{n + 30}{130 + n}$

$B$

$\overline{B}$

$\frac{1}{2}$

$\frac12$

$B$

$\overline{B}$

$\frac{30}{30 + n}$

$\frac{n}{30+n}$

Ω = Point(yAxis)
hb = 0.8 (slider from 0 to 5, step 0.1)
noeud1 = 1.7 (slider from 0 to 5, step 0.1)
A_1: (hb, noeud1)
A_2: (hb, (-y(A_1)))
f = Segment(Ω, A_1)
g = Segment(Ω, A_2)
noeud2 = 1.1 (slider from 0 to 5, step 0.1)
A_{11}: ((2 * hb), y(A_1) + noeud2)
A_{12}: ((2 * hb), y(A_1) - noeud2)
h = Segment(A_1, A_{11})
i = Segment(A_1, A_{12})
A_{21}: ((2 * hb), y(A_2) + noeud2)
A_{22}: ((2 * hb), y(A_2) - noeud2)
j = Segment(A_2, A_{21})
k = Segment(A_2, A_{22})