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