ELI5

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You are currently reading a thread in /g/ - Technology

You are currently reading a thread in /g/ - Technology

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ELI5

-p V -q is a true statement

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isn't this one of de morgan's laws?

(~p) or (~q) == ~ (p and q)

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A truth cannot insinuate a false, but a false can insinuate a true.

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Fucking most retarded math I've ever had the misfortune of taking. Did good in the end but this shit is useless despite being easy.

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>>52385144

symbol logic is the root of programming and computation

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>>52385144

Dude, to work for the government here in my country, you gotta pass a test (basic and specific knowledge).

Basic knowledge normally includes first year college mathematics and logic.

To get a stable income of 10 to 30k a month, it seems pretty useful to me hehehe.

People usually memorize the entire Truth Table for the tests (they're really competitive though).

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>>52385251

What country?

>>52385184

I understood that, it helped with programming, but I felt it was useless outside of programming.

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>>52384671

>-p V -q is a true statement

That's not what the picture says though.

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>>52385292

yeah, the picture is the superset operator.

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>>52384671

>-p V -q is a true statement

Not if both p and q are true.

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>>52384671

Is a contradiction. A variable cannot be true and false a the same time. OP is a faggot.

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Do your own discrete math work

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>>52385462

Why are you such an asshole? Could have at least told him about the board for homeworks...

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>>52384671

ahh, implication. left side implies right side - basically "if left side, then right side".

T->T = T, because if the premise is true and the effect is true, then the implication is okay.

T->F = F, because quite simply, it means that left side does not imply right side (right side is true even though the left is false), so the implication is wrong, hence false.

F->T = T and F->F = T, because if the premise is false, then we can't say if the implication is false.

For example: "if there are clouds, it's raining". Keep in mind that this does not mean "it rains if AND ONLY IF there are clouds", but rather "if there are clouds, I'm 100% certain it's raining. no clouds, I don't know shit".

clouds->rain = true; crystal clear, our reasoning is okay

clouds->norain = false; even though we have clouds, there's no rain, so our assumption that clouds imply rain was wrong

noclouds->rain = true; noclouds->norain = true; basically because we can't prove that the reasoning is wrong.

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>>52385447

Open your eyes retard

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>>52385626

i like to think of it using set theory's superset operator better.

p is a superset of q. So, if it is false in q, then there's absolutely no logical way it can be true in p.

But if it is true in q, then p can logically 'turn it off' or 'not use' it.

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>>52385679

another way to think of it is using object-oriented programming and inheritance.

if q is some base class and p inherits q, then it must exist (be truthful) in q for p to use it. p cannot built upon what isn't there.

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>>52385679

what a retarded way to think about implication.

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>>52385462

It's not even homework, today was the first day of class and I wanted a simpler explanation.

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File: a273948d87194042764de2a6724c79e0.jpg (23 KB, 192x192)
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23 KB, 192x192

this desu

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>>52386009

It's not retarded, it's actually the most intuitively clear way to understand it.

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>>52385270

What did you expect, bitch? That discrete math was going to help you learn to talk to girls?

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>>52386009

>what are Venn diagrams and why do they represent logical operators so well

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>>52386335

y-yes

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