A.A.
\(\int {\left| {\dfrac{{f\left( x \right)}}{{g\left( x \right)}}} \right|dx} = \dfrac{{\int {f\left( x \right)dx} }}{{\int {g\left( x \right)dx} }}\), \(\left( {g\left( x \right) \ne 0,\,\,\forall x \in \mathbb{R}} \right)\).
B.B.
\(\int {\left( {f\left( x \right) - g\left( x \right)} \right)dx} = \int {f\left( x \right)dx} - \int {g\left( x \right)dx} \).
C.C.
\(\int {k.f\left( x \right)dx} = k\int {f\left( x \right)dx} ,\,\left( {k \ne 0,\,k \in \mathbb{R}} \right)\).
D.D.
\(\int {\left( {f\left( x \right) + g\left( x \right)} \right)dx} = \int {f\left( x \right)dx} + \int {g\left( x \right)dx} \).
