Tích phân b ∫ a f ( x ) d x bằng với tích phân

\[\mathop \smallint \limits_{\rm{a}}^{\rm{c}} {\rm{f(x)dx}} + \mathop \smallint \limits_{\rm{c}}^{\rm{b}} {\rm{f(x)dx}};{\rm{c}} \in {\rm{R}}\]

\[\mathop \smallint \limits_{\rm{a}}^{\rm{c}} {\rm{f(x)dx}} + \mathop \smallint \limits_{\rm{c}}^{\rm{b}} {\rm{f(x)dx}};a \le c \le b\]

\[\mathop \smallint \limits_{\rm{c}}^{\rm{a}} {\rm{f(x)dx}} + \mathop \smallint \limits_{\rm{b}}^{\rm{c}} {\rm{f(x)dx}};a \le c \le b\]

\[\mathop \smallint \limits_{\rm{a}}^{\rm{b}} {\rm{f(t)dx}}\]