Answer to problem 8.5. In logic the not function is indicated by a horizontal line over the variable or expression. What ever is under the line is to be complemented. There are 3 levels of lines over the expression. I will start by giving you the expression with only single variable complements noted. O = eh and not B and not C and not eh and not b and c and eh and b and c. The part of the expression eh and not b and not c has a line over it indicating that this part of the expression is to be complemented. There is also a line over not eh and not b and c. There is a line over eh and b and c. And finally, there is a line over the entire expression to the right of the equals sign. End verbal description.
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