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Re: 9th grade homework help: encoding & decoding using a key matrix

Nov 21, 2006


-ShaDe- wrote:


Im confused. wrote:


-ShaDe- wrote:


overachiever wrote:
Okay, I basically need to:
"Convert letters to numbers using the replacement code of A=1, B=2, C=3... Y=25, Z=26, =0.
Using a 2 by 2 key matrix, encrypt your message"

I've gotten to the point where I (for example) have:

o(15) v(22) e(05) r(18) a(01) c(03) h(08) i(09) e(05) v(22) e(05) r(18)

152205180103080905220518

Now, what do I do with it? Am I supposed to use each number and multiply (scale) it by the martix and find the determinant or what...? I just have no idea. M book says nothing, and I can't really find anything on google. If anyone knows or has any helpul links, it would be great. This is due next Tuesday, but I need to get it done by this Wedneday. Alright, thanks.



Matrices are




so can you at least bother to do this?


You messed it up, noob.  He is using a 2 x 2 matrix (most likely) and then it would leave them in 1 x 2 matrices, not 1 x 3.


sigh Did you even bother to see this was an example for him to use the but oh well.


Well, your example will most likly confuse him even more than he is now. Were did you go for about 2-3 week, anyway?


Message Edited by Im confused. on 11-20-2006 05:45 PM
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Treasure Hunter
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Re: 9th grade homework help: encoding & decoding using a key matrix

Nov 21, 2006


WhiteClouds wrote:
Ah, i use to do this in 8th grade.


Instead of basic grammar and keyboarding lessons, huh? haha, just kidding.
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Re: 9th grade homework help: encoding & decoding using a key matrix

Nov 21, 2006


Im confused. wrote:


-ShaDe- wrote:


Im confused. wrote:


-ShaDe- wrote:


overachiever wrote:
Okay, I basically need to:
"Convert letters to numbers using the replacement code of A=1, B=2, C=3... Y=25, Z=26, =0.
Using a 2 by 2 key matrix, encrypt your message"

I've gotten to the point where I (for example) have:

o(15) v(22) e(05) r(18) a(01) c(03) h(08) i(09) e(05) v(22) e(05) r(18)

152205180103080905220518

Now, what do I do with it? Am I supposed to use each number and multiply (scale) it by the martix and find the determinant or what...? I just have no idea. M book says nothing, and I can't really find anything on google. If anyone knows or has any helpul links, it would be great. This is due next Tuesday, but I need to get it done by this Wedneday. Alright, thanks.



Matrices are




so can you at least bother to do this?


You messed it up, noob.  He is using a 2 x 2 matrix (most likely) and then it would leave them in 1 x 2 matrices, not 1 x 3.


sigh Did you even bother to see this was an example for him to use the but oh well.


Well, your example will most likly confuse him even more than he is now. Were did you go for about 2-3 week, anyway?


Message Edited by Im confused. on 11-20-2006 05:45 PM

Okay, thanks guys, it's fine, I get it. I'm not that stupid, it was just under-explained in my class. Don't worry about it. By the way, I'm a girl.
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Wastelander
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Re: 9th grade homework help: encoding & decoding using a key matrix

Nov 21, 2006


overachiever wrote:


Im confused. wrote:


-ShaDe- wrote:


Im confused. wrote:


-ShaDe- wrote:


overachiever wrote:
Okay, I basically need to:
"Convert letters to numbers using the replacement code of A=1, B=2, C=3... Y=25, Z=26, =0.
Using a 2 by 2 key matrix, encrypt your message"

I've gotten to the point where I (for example) have:

o(15) v(22) e(05) r(18) a(01) c(03) h(08) i(09) e(05) v(22) e(05) r(18)

152205180103080905220518

Now, what do I do with it? Am I supposed to use each number and multiply (scale) it by the martix and find the determinant or what...? I just have no idea. M book says nothing, and I can't really find anything on google. If anyone knows or has any helpul links, it would be great. This is due next Tuesday, but I need to get it done by this Wedneday. Alright, thanks.



Matrices are




so can you at least bother to do this?


You messed it up, noob.  He is using a 2 x 2 matrix (most likely) and then it would leave them in 1 x 2 matrices, not 1 x 3.


sigh Did you even bother to see this was an example for her to use the but oh well.


Well, your example will most likly confuse him even more than he is now. Were did you go for about 2-3 week, anyway?


Message Edited by Im confused. on 11-20-2006 05:45 PM

Okay, thanks guys, it's fine, I get it. I'm not that stupid, it was just under-explained in my class. Don't worry about it. By the way, I'm a girl.


Fixed

Shade was doing unimportant stuff .
"I loooove you, but what are we going to do?."Ike Turner is the man.
olvidala mejor olvidala,
arrancala de ti que ya tiene otro amor
olvidala mejor olvidala,
arrancala de ti ve y busca otra ilusion

es que no dejan los recuerdos
si yo le ense��e a amar, fui su primer amor
no sale de mi pensamiento
aun ella vive aqui dentro del corazon
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I Only Post Everything
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Re: 9th grade homework help: encoding & decoding using a key matrix

Nov 21, 2006
I thought 9th grade was Algebra 1
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Re: 9th grade homework help: encoding & decoding using a key matrix

Nov 21, 2006


overachiever wrote:
OHHHHHHHHHHHH!!!! overacheiver sees now! So, we divide them up like that and then multiply. That's what I thought it might have been, but I wasn't really sure. Then we just leave the matrix that we get raw? (and then decode it again on a seperate sheet of paper for the other fourth of the project); Okay, thanks alot.

By the way, mine was a project too. Maybe we're in the same school system. AACPS?

-RKO- wrote:
I just had this HW too, although I had it in the form of a project.

What we had to do was take the numbers and put them in groups of matricies, then multiply each of those by the "key" matrix.


Please dont start talkin like Shade now



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Treasure Hunter
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Re: 9th grade homework help: encoding & decoding using a key matrix

Nov 21, 2006


overachiever wrote:


Im confused. wrote:


-ShaDe- wrote:


Im confused. wrote:


-ShaDe- wrote:


overachiever wrote:
Okay, I basically need to:
"Convert letters to numbers using the replacement code of A=1, B=2, C=3... Y=25, Z=26, =0.
Using a 2 by 2 key matrix, encrypt your message"

I've gotten to the point where I (for example) have:

o(15) v(22) e(05) r(18) a(01) c(03) h(08) i(09) e(05) v(22) e(05) r(18)

152205180103080905220518

Now, what do I do with it? Am I supposed to use each number and multiply (scale) it by the martix and find the determinant or what...? I just have no idea. M book says nothing, and I can't really find anything on google. If anyone knows or has any helpul links, it would be great. This is due next Tuesday, but I need to get it done by this Wedneday. Alright, thanks.



Matrices are




so can you at least bother to do this?


You messed it up, noob.  He is using a 2 x 2 matrix (most likely) and then it would leave them in 1 x 2 matrices, not 1 x 3.


sigh Did you even bother to see this was an example for him to use the but oh well.


Well, your example will most likly confuse him even more than he is now. Were did you go for about 2-3 week, anyway?


Message Edited by Im confused. on 11-20-2006 05:45 PM

Okay, thanks guys, it's fine, I get it. I'm not that stupid, it was just under-explained in my class. Don't worry about it. By the way, I'm a girl.


Im a sophmore and we just now did this in Algebra II so don't feel bad.
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Treasure Hunter
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Re: 9th grade homework help: encoding & decoding using a key matrix

Nov 21, 2006
It's different depending on your school system, and if you're taking the most advances courses for your school. Even the order varies, I've seen. For us, the most advanced you can get without doing anything special is:

7th- Algebra I
8th- Geometry
9th- Algebra II

And, I'm in the pre-International Baccolaureate program, so I'm in all honors classes, which means that I'm on that circuit. Actually, though, we have a Freshmen in our school who is in Calculus. He's very, very smart in math.

Fifa Soccer wrote:
I thought 9th grade was Algebra 1



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