Math Is Fun Forum

B-Sho

Member

Registered: 2013-10-25

Posts: 6

Need Help for Set Theory, for college class!

Hi I need help with Set Theory. I am in a Programming class in college and I don’t understand this question at all! If you could help me, I would appreciate it.

Write three statements about sets. The first defines set A with values 1, 2, 3, 4 and 5. The second defines set B with the values 2, 4, 6, 8 and 10. The third lists the union of sets A and B. (Use the uppercase letter U to signify union.)

Thank you

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Need Help for Set Theory, for college class!

Hi B-Sho;

There are lots of ways to define those sets.

A = {1,2,3,4,5}

B = {2,4,6,8,10}

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

B-Sho

Member

Registered: 2013-10-25

Posts: 6

Re: Need Help for Set Theory, for college class!

Thank you bobbym!

What do you mean there are lots of ways to define those sets?

B-Sho

Member

Registered: 2013-10-25

Posts: 6

Re: Need Help for Set Theory, for college class!

Also, is their a space between the A and U for union?  is it A U B or AUB altogether?

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Need Help for Set Theory, for college class!

Hi;

Either way, the space is more readable.

Other ways to define those sets are,

A is the set whose members are the first 5 positive integers.

Or you can say:

A = { n: n is an integer and n>0 and n<6 }

And there are more...

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

B-Sho

Member

Registered: 2013-10-25

Posts: 6

Re: Need Help for Set Theory, for college class!

Thank you. 

You saved my life

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Need Help for Set Theory, for college class!

Hi B-Sho;

Do not thank me, anybody forced to do set theory is better off dead. The last time I had to do some my spleen exploded. It was not a pretty sight.

I modified post number #5.

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

B-Sho

Member

Registered: 2013-10-25

Posts: 6

Re: Need Help for Set Theory, for college class!

The best you are.  Yesssssssssssssss.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Need Help for Set Theory, for college class!

I was the best at only one thing. It was a strange feeling. I decided I would give it up and do math instead...

Anyway, hopefully you will survive the set theory and become a good programmer.

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

B-Sho

Member

Registered: 2013-10-25

Posts: 6

Re: Need Help for Set Theory, for college class!

I'm actually an Computer Information Networking Technology major "IT"  For some reason they make me take a Programming class.  No way in hell I could be a Programmer, I would hate my life if I did code for <=40 hours a week haha.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Need Help for Set Theory, for college class!

Hi;

Oh sorry, then you will need the set theory even less.

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.