2 2 Conditional Statements Conditional is an ifthen
- Slides: 15
2 -2 Conditional Statements
Conditional: is an if-then statement Hypothesis: is the part p following the if Conclusion: is the part of the q following then
Problem 1: Identifying the Hypothesis and the Conclusion What are the hypothesis and the conclusion of the conditional? If an animal is a robin, then the animal is a bird
Problem 1: Identifying the Hypothesis and the Conclusion What are the hypothesis and the conclusion of the conditional? If an angle measures 130, then the angle is obtuse.
Problem 2: Writing a Conditional How can you write the following statement as a conditional? Vertical angles share a vertex.
Problem 2: Writing a Conditional How can you write the following statement as a conditional? Dolphins are mammals.
Truth Value: of a conditional is either true or false • To show it is true, show that every time the hypothesis is true the conclusion is also true (A counterexample can help you determine whether a conditional with a true hypothesis is true) • To show it is false, find one counterexample for which the hypothesis is true and the conclusion is false, then the truth value of the conditional is false
Problem 3: Finding the Truth Value of a Conditional Is the conditional true or false? If false, find a counterexample. If a woman is Hungarian, then she is European.
Problem 3: Finding the Truth Value of a Conditional Is the conditional true or false? If false, find a counterexample. If a number is divisible by 3, then it is odd.
Equivalent Statements: have the same truth value • Conditional and Contrapositive (both are either true or false) • Converse and Inverse
Problem 4: Writing and Finding Truth Values of Statements What are the converse, inverse, and contrapositive? What are the truth values of each? If a statement is false give a counterexample. If the figure is a square, then the figure is a quadrilateral
Conditional: If the figure is a square, then the figure is a quadrilateral p: q: STATEMENT HOW IT IS TRUE or FALSE WRITTEN (counterexample) Converse Inverse Contrapositive
Conditional: If a vegetable is a carrot, then it contains beta carotene p: q: STATEMENT HOW IT IS TRUE or FALSE WRITTEN (counterexample) Converse Inverse Contrapositive
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- First conditional and time clauses
- Negate the hypothesis and conclusion
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- Bioconditional statement
- Complete the proof
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- Site:slidetodoc.com
- Conditional and converse statements