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Câu hỏi: Cho hàm số $f\left( x \right)=2{{\text{e}}^{x}}-3$. Khẳng định nào dưới đây đúng?
A. $\int{f\left( x \right)\text{d}x}=2{{\text{e}}^{x}}+3x+C$.
B. $\int{f\left( x \right)\text{d}x}=2{{\text{e}}^{x}}-3x+C$.
C. $\int{f\left( x \right)\text{d}x}=2{{\text{e}}^{x-1}}+C$.
D. $\int{f\left( x \right)\text{d}x}=2{{\text{e}}^{x}}+C$.
A. $\int{f\left( x \right)\text{d}x}=2{{\text{e}}^{x}}+3x+C$.
B. $\int{f\left( x \right)\text{d}x}=2{{\text{e}}^{x}}-3x+C$.
C. $\int{f\left( x \right)\text{d}x}=2{{\text{e}}^{x-1}}+C$.
D. $\int{f\left( x \right)\text{d}x}=2{{\text{e}}^{x}}+C$.
Ta có : $\int{f\left( x \right)\text{d}x}=\int{\left( \text{2}{{\text{e}}^{x}}-3 \right)\text{d}x}=2{{\text{e}}^{x}}-3x+C$.
Đáp án B.