カルノー図
f = B ̄ ⋅ C ̄ ⋅ D ̄ + B ̄ ⋅ C ⋅ D ̄ + A ̄ ⋅ B ⋅ D ⋅ E + A ⋅ B ⋅ D ⋅ E + A ̄ ⋅ B ̄ ⋅ C ⋅ E = B ̄ ⋅ D ̄ + B ⋅ D ⋅ E + { A ̄ ⋅ B ̄ ⋅ C ⋅ E A ̄ ⋅ C ⋅ D ⋅ E {\displaystyle {\begin{alignedat}{2}f&={\overline {B}}\cdot {\overline {C}}\cdot {\overline {D}}+{\overline {B}}\cdot C\cdot {\overline {D}}+{\overline {A}}\cdot B\cdot D\cdot E+A\cdot B\cdot D\cdot E+{\overline {A}}\cdot {\overline {B}}\cdot C\cdot E\\&={\overline {B}}\cdot {\overline {D}}+B\cdot D\cdot E+{\begin{cases}{\overline {A}}\cdot {\overline {B}}\cdot C\cdot E\\{\overline {A}}\cdot C\cdot D\cdot E\end{cases}}\end{alignedat}}}