Question

[Big City Boy]

Tính: \(lim_{x\rightarrow-2}\dfrac{2x+1}{\left(x+2\right)^2}\)

Answer 1

[Akai Haruma]

Lời giải:
$x\to -2$ thì $2x+1\to -3<0$

$x\to -2$ thì $(x+2)^2\to 0$

$\Rightarrow \lim\limits_{x\to -2}\frac{2x+1}{(x+2)^2}=-\infty$