Homework Help: Math

Posted by Jon on Tuesday, February 26, 2008 at 1:42pm.

For questions 1 and 2, use the matrices below:

A=[17 2 3]
[11 4 -9]

B=[10 6 -7]
[-4 3 0]

C=[1]
[2]
[-2]

1)Find A-B

[17-10] [2-6] [3--7]
[11--4] [4-3] [-9-0] =[7 -4 10]
[15 1 -9]

2)Find BC, if possible.

10(-1) 6(2) -7(-2)
-4(-1) 3(2) 0(-2) =[-10 12 14]
[4 6 0]

(I hope this posts right)

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