I need help guys

2008-03-11 14:59:48

#1

bennisboy: Member; +829|7127|Poundland

No its not a girl thread.

Okay, how do I solve second order difference equations, I've got a test on it 2moro, but I've lost my notes, n the internet sites I've found are pure turd.

How would I go about solving

2y_t+8y_t-1+6y_t-2=32

i've got a rough idea. I get to the stage:

y_t=A₁(-1)^t+A₂(-3)^t+2

and have no idea how to do the rest of it

2008-03-11 15:03:29

#2

bennisboy: Member; +829|7127|Poundland

Ah come on, someone must know

2008-03-11 15:05:56

#3

Funky_Finny: Banned; +456|6613|Carnoustie, Scotland

Oh.Good.God.

I'm having trouble with 4x²+16/(x-1)(x+1)

2008-03-11 15:11:09

#4

Ryan: Member; +1,230|7323|Alberta, Canada

Funky_Finny wrote:
Oh.Good.God.

I'm having trouble with 4x²+16/(x-1)(x+1)

4x²+16/x²-1 = 4/-16 = -1/4

2008-03-11 15:11:53

#5

bennisboy: Member; +829|7127|Poundland

Ryan wrote:
Funky_Finny wrote:
Oh.Good.God.

I'm having trouble with 4x²+16/(x-1)(x+1)
4x²+16/x²-1 = 4/-16 = -1/4

no help me!!!!!!!!!!!! :'(

2008-03-11 15:12:48

#6

Ryan: Member; +1,230|7323|Alberta, Canada

bennisboy wrote:
Ryan wrote:
Funky_Finny wrote:
Oh.Good.God.

I'm having trouble with 4x²+16/(x-1)(x+1)
4x²+16/x²-1 = 4/-16 = -1/4
no help me!!!!!!!!!!!! :'(

I dunno how to do second order differences. To me, your question looks like sequences.

2008-03-11 15:14:51

#7

bennisboy: Member; +829|7127|Poundland

hmmm, I think it might be

y_t= (y₀+2)(-1)^t(-3)^t+2

I never thought an economics degree would involve this

Last edited by bennisboy (2008-03-11 15:15:46)

2008-03-11 15:18:13

#8

CTD-CaptainBuck: BLEEDING BLUE; +71|7248|Tenn

bennisboy wrote:
hmmm, I think it might be

y_t= (y₀+2)(-1)^t(-3)^t+2

I never thought an economics degree would involve this

what? ur kidding right?

2008-03-11 15:25:32

#9

bennisboy: Member; +829|7127|Poundland

CTD-CaptainBuck wrote:
bennisboy wrote:
hmmm, I think it might be

y_t= (y₀+2)(-1)^t(-3)^t+2

I never thought an economics degree would involve this
what? ur kidding right?

damn, I dont know if your being sarcastic, talkin about my answer, or talkin bout me not thinkin eco would involve this

2008-03-11 15:52:21

#10

Mint Sauce: Frighteningly average; +780|6767|eng

I would do it for you if i wasn't on my phone.

#rekt

2008-03-11 16:11:31

#11

bennisboy: Member; +829|7127|Poundland

Mint Sauce wrote:
I would do it for you if i wasn't on my phone.

cheers mate, I've got it now, went one step too far with substitution. done it. now for some more

2008-03-11 16:13:53

#12

Mint Sauce: Frighteningly average; +780|6767|eng

bennisboy wrote:
Mint Sauce wrote:
I would do it for you if i wasn't on my phone.
cheers mate, I've got it now, went one step too far with substitution. done it. now for some more

sounds fun. Let me know how the test goes.

#rekt

BF2S Forums I need help guys

Funky_Finny wrote:

Ryan wrote:

Funky_Finny wrote:

bennisboy wrote:

Ryan wrote:

Funky_Finny wrote:

bennisboy wrote:

CTD-CaptainBuck wrote:

bennisboy wrote:

Mint Sauce wrote:

bennisboy wrote:

Mint Sauce wrote:

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