Question

Me ajudem! Valeu!


$a) \lim_{x \to +\infty} \frac{\sqrt{x} + 1}{x+2} ; b) \lim_{x \to \ 3^{+} } \frac{7}{3-x}; c) \lim_{x \to \ 2^{-} } \frac{7}{2-x}$

Answer 1

Resposta:

a)

lim  x*(√(1/x) +1/x)/x*(1+2/x)

x-->∞

lim  (√(1/x) +1/x)/(1+2/x)

x-->∞

=(√0+0)/(1+0) =0

b)

Lim 7/(3-x)  = 7/0⁻ = -∞

x-->3⁺

c)

Lim 7/(2 -x)  = 7/0⁺ = +∞

x-->2⁻