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Câu hỏi: Biết $\int\limits_{2}^{3}{f\left( x \right)\text{d}x}=3$ thì $\int\limits_{2}^{3}{g\left( x \right)\text{d}x=1}$. Khi đó $\int\limits_{2}^{3}{\left[ f\left( x \right)-g\left( x \right) \right]\text{d}x}$ bằng
A. $16.$
B. $4.$
C. $2$.
D. $8\cdot $
A. $16.$
B. $4.$
C. $2$.
D. $8\cdot $
$\int\limits_{2}^{3}{\left[ f\left( x \right)-g\left( x \right) \right]\text{d}x}=\int\limits_{2}^{3}{f\left( x \right)\text{d}x}-\int\limits_{2}^{3}{g\left( x \right)\text{d}x}=2$.
Đáp án C.