3). Pick one concept from either text, not already discussed, that you found useful or interesting and discuss it. Use either Chapter 6 or Chapter 7.
Necessary and sufficient conditions is saying two claims are equivalent if each is true exactly when the other is.
For example: If people drink at a party and get caught, they are going to get in trouble.
People will not get in trouble if they drink at a party and do not get caught.
This is called a Contrapositive, if A, then B is. If not B, Then not A. These are therefore equivalent.
Conditionals are needed to understand what is meant by necessary and sufficient conditions.
Necessary Condition: A is necessary for B means if not A, then not B is true. For example, it is necessary to feed pets or they will die. Therefore: if a person does not feed his or her pets, he or she will not have a pet anymore because it will die.
Sufficient Condition: A is sufficient for B means if A, then B is true. For example, it is sufficient to feed pets in order for them to live. Therefore, if a person feeds his or her pet, his or her pet will live.
great examples, easy to follow and explain the whole if A than B and if not A than B concepts, I thought, a little better than our book. Really shows how the two parts of the sentence are truly connected and will than effect the outcome of the other. If one event happens then the other will follow versus if one event doesnt occur than the following event to is effected, depending on the sentence used.
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