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Câu hỏi: Nếu $\int\limits_{1}^{2}{f\left( x \right)\text{d}x}=3$ và $\int\limits_{0}^{2}{f\left( x \right)\text{d}x}=-5$ thì $\int\limits_{0}^{1}{f\left( x \right)\text{d}x}$ bằng
A. $-2$.
B. $8$.
C. $-8$.
D. $2$.
A. $-2$.
B. $8$.
C. $-8$.
D. $2$.
Ta có $\int\limits_{0}^{1}{f\left( x \right)\text{d}x}=\int\limits_{0}^{2}{f\left( x \right)\text{d}x}-\int\limits_{1}^{2}{f\left( x \right)\text{d}x}=-5-3=-8$.
Đáp án C.