Asked by Ciara

what does [-8 4] equal ?
-3[ 0-1]
[ 6 3]
How do I do this ? Help please
Answered by Damon
I have no idea what you are doing. Are those vectors or matrices or what ?
Answered by Ciara
There Matrices , Sorry I don't know how to type it on the laptop
Answered by Damon
can you describe it in words?

is it a single matrix like
| -8 +4 |
| +0 +3 |
| +6 +3 |

and you want something about it ?
Answered by Damon
Anyway --- go here :

http://matrixcalc.org/en/
Answered by Ciara
it has a -3 on the outside of it

|-8 4|
-3|0 -1|
|6 3|
That's how it looks
Answered by Ciara
well it didn't come out right again but thank you anyway , Ill check at out rigt now
Answered by Damon
Oh like this?

| -8 +4 |
-3| +0 +3 |
| +6 +3 |

now does it want the product or -3 times the determinant I wonder ?
Answered by Ciara
what am I supposed to type in matrix b ?
Answered by Damon
Perhaps nothing. I need to figure out what the question is :)
Answered by Ciara
it just says what does it equal
Answered by Ciara
That's the question , but you wrote +3 twice , the middle one is -3|0-1|
Answered by Damon
Well, if you multiply a matrix by a scalar, you multiply every element by the scalar
Answered by Damon
|24 -12|
|0 +3 |
|-18 -9|
Answered by Damon
Here:
http://www.purplemath.com/modules/mtrxmult.htm
Answered by Ciara
Ohh I get it now , Thanks so much , but now im kinda confused about the negative signs
Answered by Ciara
Thankyou:)
Answered by Damon
You are welcome. Good luck !
Answered by Ciara
Thank you so MUCH ! :)
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