Discrete Math Help for Sarah | Physics Forum

sarah22
Messages
26
Reaction score
0
Dear "Physics Forum",

Hello! I'm Sarah. Yeah, I'm new here and starting to love this forum. I'm having a hard time proving if a statement is true or false in discrete math. For example, For all X, there's a Y (x+y=x). This question is easy and the answer is true by letting y as 0 and x for anything. But I really get confuse when the question is so complicated like making not(Vx) not(Ey) ... and making it for only real numbers... I'm good in other math like Algebra, Trigonometry and Calculus but this one really burns my mind. Can anyone here give me some tips.

BTW, is this the right forum?

Thanks,
Sarah
 
Physics news on Phys.org
I'm not sure what it is your asking...just learn the rules of logic I guess...

Not (Vx) is equivalent to (Ex)

and Not (Ey) is equivalent to (Vy)
 

Thread 'Here's a Statistics problem for game of Polo (or Hockey if you like)'

Namaste & G'day Postulate: A strongly-knit team wins on average over a less knit one Fundamentals: - Two teams face off with 4 players each - A polo team consists of players that each have assigned to them a measure of their ability (called a "Handicap" - 10 is highest, -2 lowest) I attempted to measure close-knitness of a team in terms of standard deviation (SD) of handicaps of the players. Failure: It turns out that, more often than, a team with a higher SD wins. In my language, that...
View full post »

Thread 'Roulette wheel physics and probability'

Hi all, I've been a roulette player for more than 10 years (although I took time off here and there) and it's only now that I'm trying to understand the physics of the game. Basically my strategy in roulette is to divide the wheel roughly into two halves (let's call them A and B). My theory is that in roulette there will invariably be variance. In other words, if A comes up 5 times in a row, B will be due to come up soon. However I have been proven wrong many times, and I have seen some...
View full post »

Similar threads

Discrete Math Question on Universal and Existential Quantifiers
Replies
10
Views
7K
A chance to the forums
Replies
1
Views
353
Courses Need help in choosing math classes for a HS student
Replies
32
Views
2K
Other A in Discrete Math 1, Lost in Discrete 2.
Replies
4
Views
2K
[Discrete] Prove that |nZ| = |Z| for any postive integer n
Replies
1
Views
2K
What are some helpful forums for undergraduate math and general physics topics?
Replies
3
Views
352
Studying Looking for a thread discussing ideal math classes for physics major
Replies
1
Views
775
Other Math Help for Physics Undergrad: Advice Needed
Replies
9
Views
2K
Intro Math Plan to revise my learned math & start learning pure math
Replies
5
Views
4K
A Solve Line Integral Question | Get Math Help from Physics Forums
Replies
5
Views
2K

Hot Threads

Recent Insights

Back
Top