Tìm khẳng định sai.

Câu hỏi: Tìm khẳng định sai.

A \(\int {\left[ {f\left( x \right) + g\left( x \right)} \right]dx = \int {f\left( x \right)dx}  + \int {g\left( x \right)dx} } \)

B \(\int_a^b {f\left( x \right)dx = \int_a^c {f\left( x \right)dx + } } \int_c^b {f\left( x \right)dx,\,\,\,\,a < c < b} \)

C \( \int\limits {f\left( x \right)g\left( x \right)dx}  = \int\limits{f\left( x \right)dx.\int\limits {g\left( x \right)dx} } \)

D \(\int\limits_{}^{} {f'\left( x \right)dx}  = f\left( x \right) + C\)