Câu 1. Nếu ∫03f(x)dx=6\int\limits_{0}^{3}{f(x)d}x=60∫3f(x)dx=6 thì ∫03[13f(x)+2]dx\int\limits_{0}^{3}{\left[ \frac{1}{3}f(x) + 2\right]d}x0∫3[31f(x)+2]dx bằng
