So I am practicing for an exam in digital electronics. I am doing some exercises on writing expressions from truth tables, and I came across a description for the columns that should be true and false in the truth table I have never seen before.
It is the + d(0,4) part in the end that I don't know what it means. How does it apply when I write the truth table? I have googled for quite some time and I cannot find it.
This is what it looks like:
So my task was to write a truth table and then a sum of products expression from it. I'm confused and don't know if the d(0,4) in the end mean that columns 0 and 4 also should be true.