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Câu hỏi: Cho hàm số $f\left( x \right)=2-{{x}^{3}}$. Trong các khẳng định sau, khẳng định nào đúng?
A. $\int{f\left( x \right)\text{d}x}=2x-\dfrac{{{x}^{4}}}{4}+C$.
B. $\int{f\left( x \right)\text{d}x}=2-\dfrac{{{x}^{4}}}{4}+C$.
C. $\int{f\left( x \right)\text{d}x}=-3{{x}^{2}}+C$.
D. $\int{f\left( x \right)\text{d}x}={{x}^{3}}+C$.
A. $\int{f\left( x \right)\text{d}x}=2x-\dfrac{{{x}^{4}}}{4}+C$.
B. $\int{f\left( x \right)\text{d}x}=2-\dfrac{{{x}^{4}}}{4}+C$.
C. $\int{f\left( x \right)\text{d}x}=-3{{x}^{2}}+C$.
D. $\int{f\left( x \right)\text{d}x}={{x}^{3}}+C$.
Ta có: $\int{f\left( x \right)\text{d}x}=2x-\dfrac{{{x}^{4}}}{4}+C$.
Đáp án A.