Google
Câu hỏi: Cho $\int\limits_{0}^{1}{f\left( x \right)}\text{d}x=2$ và $\int\limits_{0}^{1}{g\left( x \right)}\text{d}x=5$. Khi đó $\int\limits_{0}^{1}{\left[ f\left( x \right)-2g\left( x \right) \right]}\text{d}x$ bằng
A. $-8$.
B. 1.
C. $-3$.
D. 12.
A. $-8$.
B. 1.
C. $-3$.
D. 12.
$\int\limits_{0}^{1}{\left[ f\left( x \right)-2g\left( x \right) \right]}\text{d}x=\int\limits_{0}^{1}{f\left( x \right)}\text{d}x-2\int\limits_{0}^{1}{g\left( x \right)}\text{d}x=-8$.
Đáp án A.