Nếu \(\int\limits_{0}^{1}{f\left( x \right)\,\text...

Câu hỏi: Nếu \(\int\limits_{0}^{1}{f\left( x \right)\,\text{d}x}=5\) và \(\int\limits_{1}^{2}{f\left( x \right)\,\text{d}x}=2\) thì \(\int\limits_{0}^{2}{f\left( x \right)\,\text{d}x}\) bằng

A

 \(3.\)                                       

B

 \(10.\)                                     

C

 \(7.\)                                       

D  \(\frac{5}{2}.\)