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Câu hỏi: Biết $\int\limits_{0}^{1}{f\left( x \right)}dx=\dfrac{1}{3}$ và $\int\limits_{0}^{1}{g\left( x \right)}dx=\dfrac{4}{3}$. Khi đó $\int\limits_{0}^{1}{\left( g\left( x \right)-f\left( x \right) \right)}dx$ bằng
A. $-\dfrac{5}{3}$.
B. $\dfrac{5}{3}$.
C. $-1$.
D. $1$.
A. $-\dfrac{5}{3}$.
B. $\dfrac{5}{3}$.
C. $-1$.
D. $1$.
$\int\limits_{0}^{1}{\left( g\left( x \right)-f\left( x \right) \right)}dx=\int\limits_{0}^{1}{g\left( x \right)}dx-\int\limits_{0}^{1}{f\left( x \right)}dx=\dfrac{4}{3}-\dfrac{1}{3}=1$,
Đáp án D.