Cho \(\int\limits_0^2 {f\left( x \right){\rm{d}}x}  = 3\) và \(\int\limits_0^2 {g\left( x \right){\rm{d}}x}  = 7\), khi đó \(\int\li

Câu hỏi :

Cho \(\int\limits_0^2 {f\left( x \right){\rm{d}}x}  = 3\) và \(\int\limits_0^2 {g\left( x \right){\rm{d}}x}  = 7\), khi đó \(\int\limits_0^2 {\left[ {f\left( x \right) + 3g\left( x \right)} \right]{\rm{d}}x} \) bằng