A conditional statement or simply conditional is an if-then statement such as this one: If you are not completely satisfied with your purchase, then you can return the product and get a full refund.
The symbol that we use to represent an if-then statement is p → q
We read p → q as "if p then q" or "p implies q"
A conditional statement has an hypothesis and a conclusion. The hypothesis is the part p following if and the conclusion is the part q following then.
Example #1 :
Identify p and q for this conditional: If you are not
completely satisfied with your purchase, then you can return the product
and get a full refund.
Hypothesis or part p : You are not completely satisfied with your purchase.
Conclusion or part q : You can return the product and get a full refund.
Example #2 :
If a quadrilateral has four right angles, then it is a rectangle.
Hypothesis : a quadrilateral has four right angles.
Conclusion : it is a rectangle.
The set of things that satisfy the hypothesis lies inside the set of things that satisfy the conclusion. In the Venn Diagram below, notice how p or the hypothesis lies completely inside the conclusion or q.
The diagram below illustrates this conditional : If you live in Boston, then you live in Massachusetts. And of course, other conditions can go inside the big circle
Here is another example illustrating how a hypothesis is contained within a conclusion. This is the Venn Diagram for example #2 mentioned before.
May 19, 19 09:20 AM
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May 19, 19 09:20 AM
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