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