Concept explainers
Rewrite each of the following statements so that it is clear that each is an implication.
The reciprocal of a positive number is positive.
The product of rational numbers is rational.
A differentiable function is continuous.
The sum of the degrees of the vertices in agraph is an even number.
A non-zero matrix is invertible.
The diagonals of a parallelogram bisect each other.
All even integers are negative.
Two orthogonal
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Discrete Mathematics with Graph Theory
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