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April 18, 2015

April 18, 2015

Posted by **heidi** on Sunday, November 30, 2008 at 8:42pm.

A= 0, -2, 3, 1

-3, 1, 0, 4

0, 5, -2, -1

B= 1, -4

-2, 1

3, 0

C= -1, 0, 2

0, 3, 4

0, 8, -1

E= 1

2

3

4

F= -2, 5

3, 7

0, 9

FIND:

) AE =

b) B+F =

c) BC + F =

d) CB =

e) CC =

- math -
**Damon**, Sunday, November 30, 2008 at 9:08pmAE =

top row 0*1 -2*2+3*3+1*4 = 9

row two -3*1+1*2+0*3+4*4 = 15

row three 0*1+5*2-2*3-1*4 = 0

B+F = S

S11 = 1-2 = -1

S12 = -5+5 = 1

S21 = -2+3 = 1

S22 = 1+7 = 8

S31 = 3+0 = 3

S32 = 0+9 = 9

so Sum is

-1 , 1

1 , 8

3 , 9

First do BC, then add F

B has two columns, C has three rows

so you may not multiply B times C

(C times B would be ok)

ok, now CB = P

P11 = -1*1+0*-2+2*3 = 5

P12 = -1*-4+0*1+2*0 = 4

P21 = 0*1+3*-2+4*3 = 6

P22 = 0*-4+3*1+4*0 = 3

P31 = 0*1+8*-2-1*3 = -19

P33 = 0*-4 +8*1-1*0 = 8

so CB=

5 , 4

6 , 3

-19 , 8

CC

1 , 16 , -4

0 , 41 , 8

0 , 16 , 33

- mhkic bpco -
**mhkic bpco**, Thursday, January 1, 2009 at 1:17pmkjihgo zsmv ambno pqezmnxc xnsrat ndcofb aoxzqwjlf

- mhkic bpco -

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