Câu hỏi: $\int{\dfrac{1}{2x-1}dx}$ bằng A. $\ln \left| 2x-1 \right|+C$. B. $\dfrac{1}{2}\ln \left| 2x-1 \right|+C$. C. $2\ln \left| 2x-1 \right|+C$. D. $-2\ln \left| 2x-1 \right|+C$.
Ta có $\int{\dfrac{1}{2x-1}dx}=\dfrac{1}{2}\ln \left| 2x-1 \right|+C$.