Cho \(\int\limits_0^1 {f\left( x \right)} dx = 3\)...

C

- Hướng dẫn giải

\(\int\limits_0^1 {f\left( x \right)dx}  + \int\limits_1^2 {f\left( x \right)dx}  = \int\limits_0^2 {f\left( x \right)dx}  \Leftrightarrow \int\limits_0^2 {f\left( x \right)dx}  = 2 + 3 = 5\)