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Câu hỏi: Nếu $\int\limits_{2}^{5}{f\left( x \right) \text{d}x=-3}$ và $\int\limits_{2}^{5}{g\left( x \right)\text{d}x=2}$ thì $\int\limits_{2}^{5}{\left( f\left( x \right)-g\left( x \right) \right)} \text{d}x$ bằng
A. $-1$.
B. $-5$.
C. $5$.
D. $1$.
A. $-1$.
B. $-5$.
C. $5$.
D. $1$.
Ta có $\int\limits_{2}^{5}{\left( f\left( x \right)-g\left( x \right) \right)} \text{d}x=\int\limits_{2}^{5}{f\left( x \right)} \text{d}x-\int\limits_{2}^{5}{g\left( x \right)} \text{d}x=-3-2=-5$.
Đáp án B.