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Câu hỏi: Cho hàm số $f\left( x \right)={{\text{e}}^{2x}}+2x.$ Khẳng định nào dưới đây đúng?
A. $\int{f\left( x \right)} \text{d}x={{e}^{x}}+{{x}^{2}}+C$.
B. $\int{f\left( x \right)} \text{d}x=\dfrac{1}{2}{{\text{e}}^{2x}}+{{x}^{2}}+C$.
C. $\int{f\left( x \right)} \text{d}x=2{{e}^{2x}}+2+C$.
D. $\int{f\left( x \right) }\text{d}x=2{{\text{e}}^{x}}+{{x}^{2}}+C$.
A. $\int{f\left( x \right)} \text{d}x={{e}^{x}}+{{x}^{2}}+C$.
B. $\int{f\left( x \right)} \text{d}x=\dfrac{1}{2}{{\text{e}}^{2x}}+{{x}^{2}}+C$.
C. $\int{f\left( x \right)} \text{d}x=2{{e}^{2x}}+2+C$.
D. $\int{f\left( x \right) }\text{d}x=2{{\text{e}}^{x}}+{{x}^{2}}+C$.
$\int{f(x)}dx=\int{({{e}^{2x}}+2x)}dx=\dfrac{1}{2}{{e}^{2x}}+{{x}^{2}}+C$.
Đáp án B.
