Cho $\mathop {\lim }\limits_{x \to 2} f\left( x \right) = 5$ . Khi đó, $\mathop {\lim }\limits_{x \to 2} 2f\left( x \right)$ bằng: A. 5. B. 2. C. 10. D. 7.

Cho $\mathop {\lim }\limits_{x \to 2} f\left( x \right) = 5$ . Khi đó, $\mathop {\lim }\limits_{x \to 2} 2f\left( x \right)$ bằng:

A. 5.

B. 2.

C. 10.

D. 7.

Cho lim\mathop {\lim }\limits_{x \to 2} f\left( x \right) = 5. Khi đó, \mathop {\lim }\limits_{x \to 2} 2f\left( x \right)\mathop {\lim }\limits_{x \to 2} 2f\left( x \right) bằng: A. 5. B. 2. C. 10. D. 7.