right, so, i got this question,

= |0 1 0 |
Let A = |0 0 1 |
= |0 0 0 |

Determine the dimension of the subspace
V={B E M3x3 ® :BA=AB}

and i got the answer as this

|0 1 0| |0 0 1|
|0 0 1|, |0 0 0|
|0 0 0| |0 0 0|

But the answer was supposed to be this, but plus extra one matrix, which is

|1 0 0|
|0 1 0|
|0 0 1|

how do i get to that ?

it's sunday, and i can't possibly ask my lecturer today, so, yeah... =)
What!?!!?!!!?!!?!!?!?!????!?!?!?!
i is cool
Trevor it shocks me how you aren't banned for the amount of spam/flaming you produce.
OK im in calculus this is what u do:

take the...

**** im too drunk to answer.. maybe tomorrow

sory bra
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Quote by Zuka
Trevor it shocks me how you aren't banned for the amount of spam/flaming you produce.

WHAT!?!?!?!!!!?!?!?!?!??!?!?!

No really wtf are you talking about?
i is cool
too much effort involved in typing matrices. I'm sure you've reviewed your work, but try looking over it again. or work backwards from the correct answer...
Quote by Trevor6
WHAT!?!?!?!!!!?!?!?!?!??!?!?!

No really wtf are you talking about?

You spam a lot. You flame a ton. This poses a question... why aren't you banned? I find you break the rules a whole lot...

Make sense?
Quote by Trevor6
WHAT!?!?!?!!!!?!?!?!?!??!?!?!

No really wtf are you talking about?

that type of math is called...uh...really ****in hard to do, shit idk, all i know is i have to take it in a couple quarters ugh
Quote by Zuka
You spam a lot. You flame a ton. This poses a question... why aren't you banned? I find you break the rules a whole lot...

Make sense?

I haven't spammed or flamed any one tonight, other then saying what because I didn't get what he was saying... are you trying to get me banned?
i is cool
ya shut up zuka....on and dude those maths are way to f..cked up..sry
Quote by Trevor6
I haven't spammed or flamed any one tonight, other then saying what because I didn't get what he was saying... are you trying to get me banned?

-> Well good, you've managed to stay partially sane for one evening.

-> How could I possibly get you banned? On the other hand, why would I waste my time doing so?

Quote by mines_1988
ya shut up zuka....on and dude those maths are way to f..cked up..sry

Who are you?
Quote by Zuka
-> Well good, you've managed to stay partially sane for one evening.

-> How could I possibly get you banned? On the other hand, why would I waste my time doing so?

I don't want to talk to you any more

k?
i is cool
"V={B E M3x3 ® :BA=AB}"

You can't have two equal signs in a problem, can you?

From now on, I'm going to assume you're multiplying
``````|0 1 0|  |0 0 1|
|0 0 1|, |0 0 0|
|0 0 0|  |0 0 0|``````

Therefore ...
``````|(0*0 + 1*0 + 0*0) (0*0 + 1*0 + 0*0) (0*1 + 1*0 + 0*0)|
|(0*0 + 0*0 + 1*0) (0*0 + 0*0 + 1*0) (0*1 + 0*0 + 1*0)|
|(0*0 + 0*0 + 0*0) (0*0 + 0*0 + 0*0) (0*1 + 0*0 + 0*0)|

|0+0+0 0+0+0 0+0+0|
|0+0+0 0+0+0 0+0+0|
|0+0+0 0+0+0 0+0+0|

|0 0 0|
|0 0 0|
|0 0 0|``````

EDIT: Is there anything in the formula I quoted that would imply that i'm not multiplying the two matricies that I multiplied?

NON-EDIT: Zuka, Trevor, both of you stop spamming up this thread.
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Last edited by Will_Minus at Mar 18, 2007,
Quote by Trevor6
I don't want to talk to you any more

k?

/sarcasm

I don't care what you want, kid.
Leave if you don't want to fight with my temporary grudge and I.
Quote by Zuka

/sarcasm

I don't care what you want, kid.
Leave if you don't want to fight with my temporary grudge and I.

Why would I argue with you? you are the most ****ing annoying person on this site, and what have I done to you that makes you want to be a bitch to me?
i is cool
Quote by Trevor6
Why would I argue with you? you are the most ****ing annoying person on this site, and what have I done to you that makes you want to be a bitch to me?

Interesting how I didn't even have to insult you to get you to insult me... hmmm...

All I meant to say was I'm surprised you aren't banned with all the spamming and flaming you do.

Quote by Zuka
Interesting how I didn't even have to insult you to get you to insult me... hmmm...

All I meant to say was I'm surprised you aren't banned with all the spamming and flaming you do.

Well, you did said that we were fighting
i is cool
Nooooo Zuka, I can't sleep until we make up!!!! I'M SORRY!!!
i is cool
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...

...
i is cool
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...

My thoughts exactly..
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Quote by KIDRoach

|1 0 0|
|0 1 0|
|0 0 1|

how do i get to that ?

it's sunday, and i can't possibly ask my lecturer today, so, yeah... =)

isn't that the identity matrix? *shrugs* i did this in precalculus a long time ago, and i'm not doing linear algebra for another semester or two...but i'll give it a shot.

i guess it's just weird without the special symbols, but is:
V={B E M3x3 ® :BA=AB}

supposed to be interpreted as the set V when B is the element of a 3 by 3 matrix and V has region/range(?) of BA=AB? so then, isn't this problem just definition recollection? the answer is the identity matrix, because the matrix produced IF it is possible that AB=BA is the identity matrix. or something like that
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Last edited by phobos at Mar 18, 2007,
Zuka > Trevor6

End of.
_____________________________________________

Last edited by Your Mother : Today at 03:44 PM
I should be able to do this problem... someone explain this

Oh and I just noticed this kid is called KidRoach :S
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Quote by KIDRoach
right, so, i got this question,

= |0 1 0 |
Let A = |0 0 1 |
= |0 0 0 |

Determine the dimension of the subspace
V={B E M3x3 ® :BA=AB}

and i got the answer as this

|0 1 0| |0 0 1|
|0 0 1|, |0 0 0|
|0 0 0| |0 0 0|

But the answer was supposed to be this, but plus extra one matrix, which is

|1 0 0|
|0 1 0|
|0 0 1|

how do i get to that ?

it's sunday, and i can't possibly ask my lecturer today, so, yeah... =)

I'm still fumbling through Algebra!
stop the spam now
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(oh! maybe some one will sig that witty comment! maybe not...)
lol

in the end, after looking back about five or six times, i went for lunch, and when i came back i realized that i did some mistake on it, so, in the end i got it solved myself =)

btw, the question wasn't complete, so actually, it needs an extra parameters,

|0 1 0|
A= |0 0 1|
|0 0 0|

@phobos
V={B E M3x3 ® :BA=AB}
yeah, this is supposed to mean that B is element of all the matrix that has 3 cols and 3 rows, and, BA=AB

but, in the end i got it solved, so, thanks for the effort =)