Google
Câu hỏi: Cho hàm số $f(x)=3-{{x}^{2}}+{{x}^{4}}$. Trong các khẳng định sau, khẳng định nào đúng?
A. $\int{f\left( x \right)}\text{d}x=3x-\dfrac{{{x}^{3}}}{3}+\dfrac{{{x}^{5}}}{5}+C$.
B. $\int{f\left( x \right)}\text{d}x=-2x+4{{x}^{3}}+C$.
C. $\int{f\left( x \right)}\text{d}x=3x+\dfrac{{{x}^{3}}}{3}+\dfrac{{{x}^{5}}}{5}+C$.
D. $\int{f\left( x \right)}\text{d}x=3-\dfrac{{{x}^{3}}}{3}+\dfrac{{{x}^{5}}}{5}+C$.
A. $\int{f\left( x \right)}\text{d}x=3x-\dfrac{{{x}^{3}}}{3}+\dfrac{{{x}^{5}}}{5}+C$.
B. $\int{f\left( x \right)}\text{d}x=-2x+4{{x}^{3}}+C$.
C. $\int{f\left( x \right)}\text{d}x=3x+\dfrac{{{x}^{3}}}{3}+\dfrac{{{x}^{5}}}{5}+C$.
D. $\int{f\left( x \right)}\text{d}x=3-\dfrac{{{x}^{3}}}{3}+\dfrac{{{x}^{5}}}{5}+C$.
Ta có: $\int{f\left( x \right)}dx=\int{\left( 3-{{x}^{2}}+{{x}^{4}} \right)}dx=3x-\dfrac{{{x}^{3}}}{3}+\dfrac{{{x}^{5}}}{5}+C$.
Đáp án A.