8. Integers U Rationals = Reals or sin?x - cos? x = 1

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter3: Functions And Graphs
Section3.5: Graphs Of Functions
Problem 55E
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Determine the truth-values of the following compound propositions, using your knowledge of mathematics and logic. Assume that x represents any real number and f any function.

 

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8. Integers U Rationals = Reals or sin?x - cos? x = 1
9. It is not the case that if x = 3 then 5x = 15.
10. t is real if and only if
e is irrational
11. For every real number x , x² > 0.
12. If x = 0 or x =1, then x2 = X.
13. If x = y, then x3 = y3.
Transcribed Image Text:8. Integers U Rationals = Reals or sin?x - cos? x = 1 9. It is not the case that if x = 3 then 5x = 15. 10. t is real if and only if e is irrational 11. For every real number x , x² > 0. 12. If x = 0 or x =1, then x2 = X. 13. If x = y, then x3 = y3.
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