Cho hai hàm số \(f(x),g(x)\) thỏa mãn \(\mathop {\lim }\limits_{x \to 1} f(x) =  - 5\) và \(\mathop {\lim }\limits_{x \to 1} g(x) = 2\). Giá trị của \(\mathop {\lim }\limits_{x \to 1} [f(x) - g(x)]\) bằng

\( - \infty \)

\(\dfrac{5}{2}\).

\( + \infty \)

$2$

3

\( - \infty \)

2

\( + \infty .\)

1

\( - \infty \).

0

\( + \infty \).

\(\mathop {\lim }\limits_{x \to {x_0}} x = {x_0}\)  

\(\mathop {\lim }\limits_{x \to {x_0}} x = 1\)

\(\mathop {\lim }\limits_{x \to {x_0}} c = {x_0}\)

\(\mathop {\lim }\limits_{x \to {x_0}} x = 0\)

\(\dfrac{1}{4}.\)

\(\dfrac{1}{2}.\)

\(\dfrac{1}{3}.\)

\(\dfrac{1}{5}.\)

\(\mathop {\lim }\limits_{x \to {x_0}} \dfrac{{f\left( x \right)}}{{g\left( x \right)}} = \dfrac{L}{M}\)

\(\mathop {\lim }\limits_{x \to {x_0}} \left[ {f\left( x \right).g\left( x \right)} \right] = L.M\)

\(\mathop {\lim }\limits_{x \to {x_0}} \left[ {f\left( x \right) - g\left( x \right)} \right] = L - M\)    

\(\mathop {\lim }\limits_{x \to {x_0}} \left[ {f\left( x \right) + g\left( x \right)} \right] = L + M\)