Chaue ENSAM 1/2 1 Proies et prédateurs (Laure André) TP Python
(x0(t) = ax(t)−bx(t)y(t)
y0(t) = −cy(t) + dx(t)y(t)
x y
(a, b, c, d) = (2,0.3,1.5,0.5)
F X = (x, y)X0(t) = F(X(t), t)
[0,2] [0,5]
(x0, y0)∈ {(10,10); (7,7); (5,7; (3,7)}
2
n∈NT(n) 2 n
2
T(n)n
T(n)
n > 0n
1/2
1
0/1
8
a b c d
A0(9,9)
B0∈ M2(N)
A B B
A
C D
(ci,j −di,j )2
A B A
B
1
/
2
100%
