awesome. got this part.5. Now use the definition of the connective operator (equ 1) to expand equ 4: A=!B!(A*B) + B(A*B)
Don't knock yourself out trying to help this multiple poster. Different userid, but same individual. https://www.electronicspoint.com/threads/validity-of-equation.288416/That transition can be shown with a simple two-term, four-square Veich diagram, aka DeMorgan's Theorem