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