Rodriquez Rodriguez
01/14/2023 · Junior High School
Exercice 4 1. Déterminer le minimum sur \( \mathbb{R} \) des fonctions ci-dessous. a. \( f: x \mapsto 1+|x|+2 x^{2}=0 \) b. \( g: x \mapsto|x+1|-4 \).. 2. Déterminer le maximum sur \( \mathbb{R} \) des fonctions ci-dessous. a. \( h: x \mapsto \frac{1}{|x|+3}+1 \) b. \( k: x \mapsto \frac{2}{1+x^{2}}-3 \)
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1. Minimums :
- \( f(x) \) : \( 1 \) (atteint à \( x = 0 \))
- \( g(x) \) : \( -4 \) (atteint à \( x = -1 \))
2. Maximums :
- \( h(x) \) : \( \frac{4}{3} \) (atteint à \( x = 0 \))
- \( k(x) \) : \( -1 \) (atteint à \( x = 0 \))
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