A "tautology" in formal logic is . . . Select one: a. a formula which is false on all of its interpretations. b. a formula which is false on some of its interpretations. c. a formula which is true on some of its interpretations. d. a formula which is true on all of its interpretations. e. a set of formulas which are all true.
A "tautology" in formal logic is . . . Select one: a. a formula which is false on all of its interpretations. b. a formula which is false on some of its interpretations. c. a formula which is true on some of its interpretations. d. a formula which is true on all of its interpretations. e. a set of formulas which are all true.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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A "tautology" in formal logic is . . .
Select one:
a. a formula which is false on all of its interpretations.
b. a formula which is false on some of its interpretations.
c. a formula which is true on some of its interpretations.
d. a formula which is true on all of its interpretations.
e. a set of formulas which are all true.
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