Question

http://i729.photobucket.com/albums/ww292/akatushi101/algeeeeeeeeeee.jpg

I need help on the Four questions .

Answer 1

=) Give me just a minute to write them down and snap a pic.

Answer 2

Okay :)

Answer 3

also these are Matrices

Answer 4

\[\left[\begin{matrix}2 & 3 \\ 5 & 1\end{matrix}\right]-\left[\begin{matrix}-1 & 7 \\ 9 & 8\end{matrix}\right]=\left[\begin{matrix}2-(-1) & 3-7 \\ 5-9 & 1-8\end{matrix}\right]=\left[\begin{matrix}3 & -4 \\ -4 & -7\end{matrix}\right]\]

Answer 5

Are the first/third ones division or addition?

Answer 6

the first one is addition
and the third one is addition

Answer 7

Thanks!

Answer 8

oh u do the same, just change the minus sign to plus

Answer 9

It's uploading.. la dee da!

Answer 10

Here you go (the first problem is last, because I thought it was a division sign!)
http://postimage.org/image/kmf3y8d8n/

Answer 11

oh okay thanks !

Answer 12

You're welcome!

Answer 13

why is the third problem not possible?

Answer 14

Because the two matrices are of different dimensions. If you go ahead and try to attempt it, you'll see quickly that you've run out of numbers and have two left over. It simply doesn't work. =)

Answer 15

I have three questions left from this matrice ..can you help me :S?

Answer 16

Sure thing!

Answer 17

http://i729.photobucket.com/albums/ww292/akatushi101/ALGEBROOO.jpg

Answer 18

the 6th question there is no "-" or " + "
so i think we can not operate it?

Answer 19

That would assume that you multiply them.

Answer 20

but it is set like this
[ 1 2 ][1]
[3 7] [5]

Answer 21

It's uploading!

You can only multiply matrices if the rows of the first equals the columns of the second.
Basically, how that works is you take the terms as such:
[ a b ] [1]
[ c d ] [5]

so that the new matrix is:
[ a*1 + b*5 ]
[ c*1 + d*5 ]

Answer 22

Here ya go:
http://postimage.org/image/p1sw2isxt/

Answer 23

oh okay.

Answer 24

Do you understand?

Answer 25

Yes.. :)
I'm sorry these were the last ones. . these are the last remaining problems
http://i729.photobucket.com/albums/ww292/akatushi101/ALGEE222.jpg

Answer 26

I'm sorry, but I have to head off to class now!=(

You can try re-posting the new set for someone else to answer or wait a few hours for my response.

Answer 27

okay thanks for all the help!