Question

\(\mathop {\lim }\limits_{x \to  + \infty } \frac{{2{\rm{x}} - 1}}{x}\) bằng: 

A. 2.                                            

B. ‒1.                                         

C. 0.                                             

D. 1.

Answer 1

\(\mathop {\lim }\limits_{x \to  + \infty } \frac{{2{\rm{x}} - 1}}{x} = \mathop {\lim }\limits_{x \to  + \infty } \frac{{x\left( {2 - \frac{1}{x}} \right)}}{x} = \mathop {\lim }\limits_{x \to  + \infty } \left( {2 - \frac{1}{x}} \right) = 2 - 0 = 2\)

Chọn A.