Need help

Hira Javaid

New member
Joined
Aug 11, 2021
Messages
38
Use truth tables to show whether the following arguments are valid. If the argument is valid, explain why. If the argument is not valid, give a counterexample.
A ∨ B
B


I know the definition of valid arguments i know to make truth tables but i don't understand like how to do it...like do i need to make truth table of A or B then after it what should be the next step. Please help
 

pka

Elite Member
Joined
Jan 29, 2005
Messages
11,388
Use truth tables to show whether the following arguments are valid. If the argument is valid, explain why. If the argument is not valid, give a counterexample.
A ∨ B
B
I assume that the notation [imath]\dfrac{A\vee B}{B}[/imath] means If A or B is true that B is true.
[ [imath](1+1=2) \vee (2+1=4) [/imath] ] is a true statement; now is [imath](2+1=4)[/imath] a true statement?
 

Hira Javaid

New member
Joined
Aug 11, 2021
Messages
38
Use truth tables to show whether the following arguments are valid. If the argument is valid, explain why. If the argument is not valid, give a counterexample.
A ∨ B
B
I know the definition of valid arguments i know to make truth tables but i don't understand like how to do it...like do i need to make truth table of A or B then after it what should be the next step. Please help
I assume that the notation [imath]\dfrac{A\vee B}{B}[/imath] means If A or B is true that B is true.
[ [imath](1+1=2) \vee (2+1=4) [/imath] ] is a true statement; now is [imath](2+1=4)[/imath] a true statement?
Yes, may be😨
 
Top