How would you simplify "(3n-2)!"?

[CrackaLackaZe]

(3n-2)!

 

[Nitemare]

inf

 

[eigen]

What do you mean by simplify.??? Do you want a closed form for this expression? Also the expression is not valid for base case n= 0.I am trying to figure out what you want as I like factroial and closed forms.

 

[NYSTrooper]

Originally posted by: CrackaLackaZe
(3n-2)!

9n^2 -12n +4?

 

[maziwanka]

Originally posted by: NYSTrooper

Originally posted by: CrackaLackaZe

(3n-2)!

9n^2 -12n +4?

hahahahaha

 

[Vortex22]

Originally posted by: NYSTrooper

Originally posted by: CrackaLackaZe

(3n-2)!

9n^2 -12n +4?

Naa... i don't think he means multiply. Its ! not ^2

 

[CrackaLackaZe]

Originally posted by: eigen
What do you mean by simplify.??? Do you want a closed form for this expression? Also the expression is not valid for base case n= 0.I am trying to figure out what you want as I like factroial and closed forms.

I'm not really sure...a friend (studying statistics) just IM'd me asking if I knew how to simplify the factorial. I tried to help but I'm not even sure myself. I thought it would be some kind of series or sequence related.

 

[KevinF]

(3*n)! / (3 * n * (3 * n - 1)) is the answer my TI-89 gives me, but I have no idea where that comes from.

 

[Gibson486]

i will give you a hint.....start plugging in numbers from 0 to whenever....

 

[Chaotic42]

I believe that's as simplified as it gets.

 

[NYSTrooper]

Originally posted by: Vortex22

Originally posted by: NYSTrooper

Originally posted by: CrackaLackaZe

(3n-2)!

9n^2 -12n +4?

Naa... i don't think he means multiply. Its ! not ^2

Cmon give the kid some good wrong answers.

 

[SuPrEIVIE]

2(1.5n-1)

 

[FrustratedUser]

Originally posted by: SuPrEIVIE
2(1.5n-1)

LOL

 

[Crusty]

 

[CrackaLackaZe]

Originally posted by: NYSTrooper

Originally posted by: Vortex22

Originally posted by: NYSTrooper

Originally posted by: CrackaLackaZe



(3n-2)!

9n^2 -12n +4?

Naa... i don't think he means multiply. Its ! not ^2

Cmon give the kid some good wrong answers.

lol...bastards.

 

[Chaotic42]

Originally posted by: CrackaLackaZelol...bastards.

Don't worry, he didn't know it was wrong when he posted it.

 

[CrackaLackaZe]

Originally posted by: Gibson486
i will give you a hint.....start plugging in numbers from 0 to whenever....

So just go from n=0 to n=5, look for a pattern, and put down a series for it?

 

[NYSTrooper]

Originally posted by: Chaotic42

Originally posted by: CrackaLackaZelol...bastards.

Don't worry, he didn't know it was wrong when he posted it.

Its close enough to the right answer to confuse him.

 

[Kyteland]

Originally posted by: MCrusty
(3n-2)(3n-1)(3n)!

Um, no.

(3n-2)!
= (3n-2)!*(3-1)/(3n-1)
= (3n-1)!/(3n-1)
= (3n-1)!*(3n)/(3n-3)/(3n)
= (3n)!/(3n-1)/(3n)

 

[Crusty]

Originally posted by: Kyteland

Originally posted by: MCrusty
(3n-2)(3n-1)(3n)!

Um, no.

(3n-2)! = (3n)!/((3n)(3n-1))

Uhmm...wtf are you talking about...

 

[Kyteland]

Originally posted by: MCrusty

Originally posted by: Kyteland

Originally posted by: MCrusty
(3n-2)(3n-1)(3n)!

Um, no.

(3n-2)! = (3n)!/((3n)(3n-1))

Uhmm...wtf are you talking about...

What you put up above is not equal to (3n-2)!

(3n-2)! != (3n-2)(3n-1)(3n)!

(3n-2)! = (3n)!/((3n)(3n-1))

edit: I edited my post with better math.

 

[JohnCU]

Originally posted by: Kyteland

Originally posted by: MCrusty

Originally posted by: Kyteland

Originally posted by: MCrusty
(3n-2)(3n-1)(3n)!

Um, no.

(3n-2)! = (3n)!/((3n)(3n-1))

Uhmm...wtf are you talking about...

What you put up above is not equal to (3n-2)!

(3n-2)! != (3n-2)(3n-1)(3n)!

(3n-2)! = (3n)!/((3n)(3n-1))

edit: I edited my post with the correct math.

Um yes (3n-2)! does = (3n-2)(3n-1)(3n)!


Hmm, it doesn't....but (n+1)! = (n+1)n!

 

[Crusty]

Originally posted by: Kyteland

Originally posted by: MCrusty

Originally posted by: Kyteland

Originally posted by: MCrusty
(3n-2)(3n-1)(3n)!

Um, no.

(3n-2)! = (3n)!/((3n)(3n-1))

Uhmm...wtf are you talking about...

What you put up above is not equal to (3n-2)!

(3n-2)! != (3n-2)(3n-1)(3n)!

(3n-2)! = (3n)!/((3n)(3n-1))

edit: I edited my post with better math.

Heh..i thought they were (3n+2)!

 

[Kyteland]

Originally posted by: JohnCU
Um yes (3n-2)! does = (3n-2)(3n-1)(3n)!

Bullsh!t

n=1

(3n-2)! = (3*1-2)! = 1! = 1

(3n-2)(3n-1)(3n)! = (3*1-2)(3*1-1)(3*1)! = 1*2*6 = 12

Copnsidered NOT proven.

 

[NYSTrooper]

Originally posted by: MCrusty

Originally posted by: Kyteland

Originally posted by: MCrusty

Originally posted by: Kyteland

Originally posted by: MCrusty
(3n-2)(3n-1)(3n)!

Um, no.

(3n-2)! = (3n)!/((3n)(3n-1))

Uhmm...wtf are you talking about...

What you put up above is not equal to (3n-2)!

(3n-2)! != (3n-2)(3n-1)(3n)!

(3n-2)! = (3n)!/((3n)(3n-1))

edit: I edited my post with better math.

Heh..i thought they were (3n+2)!

Way to go guys, now you've got him really confused.