Truth Tables - Sitcoms Online Message Boards

moeee · 02-18-2005, 01:30 AM

Does anyone know what website to visit to help me with Truth Tables? Im having a hard time understanding some logics about it.

Brian · 02-18-2005, 01:38 AM

OMG I learned about this today!

Here's what I know. Let's take 2 letters, "p" and "q."

Make a chart that is almost like an elongated T chart. Put p and q on the left but don't put a line between them.

Under p you put the following letters in the exact order you see. T = true, F = false

p q
T T
T F
F T
F F

If there is a "~" next to either letter, that is a negation of that letter. In other words, "~p" means "not p." It means q instead.

Other symbols that would help

p ^ q (it should be an upside down V but a carat is the only one that comes close) means "p and q"

p V q means "p or q"

^ = Everything is false unless both statements are true
V = Everything is true unless both statements are false

So take that p and q table I made. If p ^ q applied to it

p q
T T = T
T F = F
F T = F
F F = F

If p V q applied to it

p q
T T = T
T F = T
F T = T
F F = F

Here's an example from my notes. P = false q = true
~ p ^ (p V q)
~F ^ (F V T)
T ^ T
T

Another thing that might be useful:

~ (p V q) = ~p ^ ~q

Does that help a little?

Belair · 02-18-2005, 02:01 AM

What the hell are truth tables?

Brian · 02-18-2005, 02:06 AM

Quote:

Originally Posted by Pretty in Purple

What the hell are truth tables?

It's a math thing. It's hard to describe what it's supposed to do.

Warm & Fuzzy · 02-18-2005, 02:06 AM

Quote:

Originally Posted by Pretty in Purple

What the hell are truth tables?

Truth tables are used in solving logic. Are you guys learning this in math class or for a computer class? I'm in computer science major... and I get a lot of these stuff. They drive me nutso. LOL

Brian · 02-18-2005, 02:10 AM

Quote:

Originally Posted by Transit Whiz

Truth tables are used in solving logic. Are you guys learning this in math class or for a computer class? I'm in computer science major... and I get a lot of these stuff. They drive me nutso. LOL

I learned it in an Exploring Mathematics class.

moeee · 02-18-2005, 02:17 AM

Quote:

Originally Posted by Brian

OMG I learned about this today!

Here's what I know. Let's take 2 letters, "p" and "q."

Make a chart that is almost like an elongated T chart. Put p and q on the left but don't put a line between them.

Under p you put the following letters in the exact order you see. T = true, F = false

p q
T T
T F
F T
F F

If there is a "~" next to either letter, that is a negation of that letter. In other words, "~p" means "not p." It means q instead.

Other symbols that would help

p ^ q (it should be an upside down V but a carat is the only one that comes close) means "p and q"

p V q means "p or q"

^ = Everything is false unless both statements are true
V = Everything is true unless both statements are false

So take that p and q table I made. If p ^ q applied to it

p q
T T = T
T F = F
F T = F
F F = F

If p V q applied to it

p q
T T = T
T F = T
F T = T
F F = F

Here's an example from my notes. P = false q = true
~ p ^ (p V q)
~F ^ (F V T)
T ^ T
T

Another thing that might be useful:

~ (p V q) = ~p ^ ~q

Does that help a little?

yes it does! thanks Brian!

Belair · 02-18-2005, 02:27 AM

Ohhhh its MATH.
I failed Math in highschool.Hated it with a passion.

Sara Micelli · 02-18-2005, 02:38 AM

Quote:

Originally Posted by Pretty in Purple

Ohhhh its MATH.
I failed Math in highschool.Hated it with a passion.

Math is fun, I love it.

Georgia's on my Mind · 02-18-2005, 02:44 AM

oh god, im thankful i have no idea what you guys are talking about. i hate math with a passion.

moeee · 02-18-2005, 02:49 AM

shoot, thats how i felt earlier today when the teacher was explaining the stuff!

MsOrange · 02-18-2005, 08:18 AM

Quote:

Originally Posted by Georgia's on my Mind

oh god, im thankful i have no idea what you guys are talking about. i hate math with a passion.

Superstar · 02-18-2005, 12:04 PM

Quote:

Originally Posted by Pretty in Purple

What the hell are truth tables?

I never heard of them either

Hollow · 02-18-2005, 11:41 PM

Quote:

Originally Posted by Brian

OMG I learned about this today!

Here's what I know. Let's take 2 letters, "p" and "q."

Make a chart that is almost like an elongated T chart. Put p and q on the left but don't put a line between them.

Under p you put the following letters in the exact order you see. T = true, F = false

p q
T T
T F
F T
F F

If there is a "~" next to either letter, that is a negation of that letter. In other words, "~p" means "not p." It means q instead.

Other symbols that would help

p ^ q (it should be an upside down V but a carat is the only one that comes close) means "p and q"

p V q means "p or q"

^ = Everything is false unless both statements are true
V = Everything is true unless both statements are false

So take that p and q table I made. If p ^ q applied to it

p q
T T = T
T F = F
F T = F
F F = F

If p V q applied to it

p q
T T = T
T F = T
F T = T
F F = F

Here's an example from my notes. P = false q = true
~ p ^ (p V q)
~F ^ (F V T)
T ^ T
T

Another thing that might be useful:

~ (p V q) = ~p ^ ~q

Does that help a little?

we just started a chapter about all that in geometry.

p => q
q => p
not-p => not-q
not-q => not-p.

Dude111 · 08-06-2023, 06:24 PM

Quote:

Originally Posted by Belair

What the hell are truth tables?

Thats what im trying to figure out!!

02-18-2005, 01:30 AM	#1
moeee Peanut Butter Ice Cream Pie Forum Legend Join Date: Jul 31, 2003 Posts: 40,094	Truth Tables Does anyone know what website to visit to help me with Truth Tables? Im having a hard time understanding some logics about it.

02-18-2005, 02:01 AM	#3
Belair Back@SO&Loveit! Forum Veteran Join Date: Dec 13, 2004 Location: New York City Posts: 5,925	What the hell are truth tables?
	__________________ Half of Hollywood is dying to be discovered..... The other half are afraid they will be.

02-18-2005, 01:38 AM	#2
Brian Member Forum Celebrity Join Date: Jun 23, 2001 Posts: 20,451	OMG I learned about this today! Here's what I know. Let's take 2 letters, "p" and "q." Make a chart that is almost like an elongated T chart. Put p and q on the left but don't put a line between them. Under p you put the following letters in the exact order you see. T = true, F = false p q T T T F F T F F If there is a "~" next to either letter, that is a negation of that letter. In other words, "~p" means "not p." It means q instead. Other symbols that would help p ^ q (it should be an upside down V but a carat is the only one that comes close) means "p and q" p V q means "p or q" ^ = Everything is false unless both statements are true V = Everything is true unless both statements are false So take that p and q table I made. If p ^ q applied to it p q T T = T T F = F F T = F F F = F If p V q applied to it p q T T = T T F = T F T = T F F = F Here's an example from my notes. P = false q = true ~ p ^ (p V q) ~F ^ (F V T) T ^ T T Another thing that might be useful: ~ (p V q) = ~p ^ ~q Does that help a little?

02-18-2005, 02:27 AM	#8
Belair Back@SO&Loveit! Forum Veteran Join Date: Dec 13, 2004 Location: New York City Posts: 5,925	Ohhhh its MATH. I failed Math in highschool.Hated it with a passion.

02-18-2005, 02:44 AM	#10
Georgia's on my Mind Senior Member Forum Superstar Join Date: Aug 19, 2001 Posts: 25,054	oh god, im thankful i have no idea what you guys are talking about. i hate math with a passion.

02-18-2005, 02:49 AM	#11
moeee Peanut Butter Ice Cream Pie Forum Legend Join Date: Jul 31, 2003 Posts: 40,094	shoot, thats how i felt earlier today when the teacher was explaining the stuff!