Chapitre 5 exo 69 le 31-5-19

f(x) = If[-3 ≤ x ≤ 3, (-0.5 * x^(2)) + 4.5]
a = 1.3 (slider from 0 to 3, step 0.1)
A: (a, 0)
D: ((-a), 0)
g = OrthogonalLine(D, xAxis)
h = OrthogonalLine(A, xAxis)
C = Intersect(f, g)
B = Intersect(f, h)
AireABCD, d, a_1, b, c = Polygon(D, A, B, C)
texte1 = LaTeX(AireABCD, true, true)