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Câu hỏi: Cho $\int\limits_{0}^{5}{f\left( x \right)\text{d}x=-2}$. Tích phân $\int\limits_{0}^{5}{\left[ 4f\left( x \right)-3{{x}^{2}} \right]\text{d}x}$ bằng
A. $-140$.
B. $-130$.
C. $-120$.
D. $-133$.
A. $-140$.
B. $-130$.
C. $-120$.
D. $-133$.
Ta có: $\int\limits_{0}^{5}{\left[ 4f\left( x \right)-3{{x}^{2}} \right]\text{d}x}=4\int\limits_{0}^{5}{f\left( x \right)\text{d}x}-\int\limits_{0}^{5}{3{{x}^{2}}\text{d}x}=-8-\left. {{x}^{3}} \right|_{0}^{5}=-8-125=-133$.
Đáp án D.