coucou
f(x) = x³ -1
f'(x) = 3x²
3x² = 0
x² = 0
x=0
f(0) = 0³ -1 = -1
x l -∞ 0 +∞
f'(x) l + 0 +
f(x) l ↑ -1 ↑
g(x) = 1/x + 2
g'(x) = -1/x²
valeur interdite : x=0
x l -∞ 0 +∞
g'(x) l - ll -
g(x) l ↓ ll ↓
voila j espere t avoir aider
