lecture 4

Question 1

what is a standard form?

Answer 1

1. Premises are each:
   - On their own line
   - Numbered (for easy reference)
   - clearly stated
2. Conclusion are each:
   - on their line
   often numbered

Question 2

Give an example of standard form?

Answer 2

1. there is purple flower
2. there is flower

Question 3

why do we begin step 3 evaluation?

Answer 3

it is easier to identify and reconstruct arguments charitable if we first understand what makes a strong arugment

Question 4

What are the two ways an argument goes wrong?

Answer 4

1. A premise is false
2. The conclusion doesn’t follow from the premises

Question 5

What makes a valid argument?

Answer 5

= it is impossible for the premises to be true and the conclusion to be false
OR
= The truth of the premises guarantees the truth of the conclusions

Question 6

What makes invaild arugment?

Answer 6

= it is not valid
OR
= it is possible for the premises to be true and the conclusion false
OR
= the premises do not guarantee the truth of the conclusion

Question 7

True or false: A vaild arugment can have false premises

Answer 7

True

Question 8

True or flase: A vaild arugment can have false conclusion

Answer 8

true

Question 9

Give example of a vaild arugment?

Answer 9

There are purple flowers
There are flowers

Question 10

Given an example of invaild arugment

Answer 10

My friend is pretty and cool
My friend is pretty
Therefore shes ok

Question 11

What are the 5 logical words

Answer 11

Conjunction ( A and B)
Disjunction ( A or B)
Negation ( Not a (or) A)
Conditional ( If a then b)
Biconditional (A if and only if B) or ( If a then b and if b than a)