Bonjour,
Exercice 17 :
[tex]1) \: f(x) = 6 + \frac{22}{x} = 4 + 22 \times \frac{1}{x} [/tex]
[tex]2)\lim_{x\to0} = 4 + 22 \times \frac{1}{0} = 4 + 22 \times \infty = + \infty[/tex]
[tex]\lim_{x\to\infty} = 4 + 22 \times \frac{1}{ +\infty } = 4 + 22 \times 0 = 4[/tex]