Question

Calcule os limites utilizando as propriedades convenientes
a)$\lim_{x \to \ 3} |x-3|$

b)$\lim_{x \to \ 2} x^{2}$

c)$\lim_{x \to \ 1} 3 x^{2} + 2x - 5$

Answer 1

Basta substituir fera ! 

$a) \lim_{x \to 3}|x-3|=|3-3|=\boxed{0}$






$b) \lim_{x \to 2} 2x^{2}=2.(2) ^{2} =2.4=\boxed{8}$






$c) \lim_{x \to 1} 3 x^{2} +2x-5=3.(1) ^{2} +2.1-5=3+2-5=5-5=\boxed{0}$
 
 
                                                                ok