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Câu hỏi: Nếu $\int\limits_{-3}^{2}{f\left( x \right)\text{d}x}=2$ và $\int\limits_{-3}^{2}{g\left( x \right)\text{d}x}=-5$ thì $\int\limits_{-3}^{2}{\left[ f\left( x \right)+g\left( x \right) \right]\text{d}x}$ bằng
A. $-10$.
B. $-3$.
C. $7$.
D. $-2$.
A. $-10$.
B. $-3$.
C. $7$.
D. $-2$.
Ta có $\int\limits_{-3}^{2}{\left[ f\left( x \right)+g\left( x \right) \right]\text{d}x}=\int\limits_{-3}^{2}{f\left( x \right)\text{d}x}+\int\limits_{-3}^{2}{g\left( x \right)\text{d}x}=2+\left( -5 \right)=-3$.
Đáp án B.