Write the dual of each statement.
(x + y)(x+1) = x + xy + y
As the books skips all of the in between steps, i can only postulate on what I'm supposed to do. (I'm thinking of using a supplemental book because this book isn't helpful)
Since the book also uses a example as a definition, I'm guesing that the dual of an equation is one that is fundamentally the same but in a different form.
What I did:
However, the answer is
The professor lost me in the lecture, though I hope to meet with him later to work on some other problems.