declic2de_tp_p297.py

Created by gilles-dhaussy

Created on April 16, 2024

629 Bytes

from matplotlib.pyplot import plot, show

def f(x):
    if -1<=x<=4:
        return 4*x**2-x**3

def graph_f(n=100):
    a, b = -1, 4
    h = (b-a)/n
    lx = [a+k*h for k in range(n+1)]
    ly = [f(x) for x in lx]
    plot(lx, ly)
    show()

def parcours(p):
    x = -1
    while x<=4:
        print(x, f(x))
        x = x+p

parcours(1)

def maximum(p):
    x = -1
    x0 = -1
    while x<=4:
        if f(x)>f(x0):
            x0 = x
        x = x+p
    return (x0, f(x0))

print("Recherche du maximum, avec un pas de 1 :",maximum(1))
print("Recherche du maximum, avec un pas de 0.1 :",maximum(0.1)")

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