Nếu \(\int\limits_{1}^{4}{f\left( x \right)\text{dx}}=-2\) và \(\int\limits_{1}^{4}{g\left( x \right)\text{dx}}=-6\) thì \(\int\limits_{1}^{4}{\left[ f\left( x \right)-g\left( x \r...

* Hướng dẫn giải

\(\int\limits_1^4 {\left[ {f\left( x \right) - g\left( x \right)} \right]{\rm{dx}}}  = \int\limits_1^4 {f\left( x \right){\rm{dx}}}  - \int\limits_1^4 {g\left( x \right){\rm{dx}}}  = \left( { - 2} \right) - \left( { - 6} \right) = 4\)