The Quadratic Equation Song

1.5 Number Systems

1.4 Digital Circuits

1.3 Valid Arguments

1.2 Conditional Statements

1.1 Intro To Logic

Nothing special…not really a class.

Just some guy&#39;s voice over screenshots of completed homework problems.

Audio quality so-so.

Nothing special...

(A-&gt;B) is logically equivalent to (~A or B). So the negation of (A-&gt;B) is equivalent to (~~A and ~B) which is equivlent to (A and ~B). Replace A and B with p and ~m respectively. Then, the negation of (p-&gt;~m) is equivalent to (p and ~(~m)), which is also equivalent to (p and m).

Not an error

Discrete Mathematics - Logic

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