Câu 16:
Nếu ∫12f(x)dx=15\int\limits_{1}^{2}{f(x)}\text{d}x=151∫2f(x)dx=15 thì ∫12[3f(x)−2]dx\int\limits_{1}^{2}{\left[ 3f(x)-2 \right]}\text{d}x1∫2[3f(x)−2]dx bằng
