Question 69829: Can u please check & tell me if my answer is wrong or not?
Given: C= (matrix(2,2,-3,4,2,5))
B= (matrix(3,2,3,-6,5,7,-4,6))
Question: 3CB
What i've tried: 3(matrix(2,2,-3,4,2,5))* (matrix(3,2,3,-6,5,7,-4,6))
consider them as 4 vertically aligned matrix symbols:
= 3[-3 4]*[3 -6 5]
[2 5] [7 -4 6]
= 3[ (-3*3+4*7) (-3*-6+4*-4) (-3*5+4*6) ]
[ (2*3+5*7) (2*-6+5*-4) (2*5+5*6) ]
= 3 [ (-9+28) (18-16) (-15+24) ]
[ (6+35) (-12-20) (10+30) ]
= 3 [19 2 8]
[41 -32 40]
= [ 3*19 3*2 3*8 ]
[ 3*41 3*-32 3*40]
= [57 6 24]
[123 -96 120]
Final result- (matrix(3,2,57,6,24,123,-96,120))
Answer by venugopalramana(3286)   (Show Source):
You can put this solution on YOUR website! YOU DID VERY WELL GOOD A SLIGHT ERROR IS THERE..SEE MY COMMENTS BELOW
Can u please check & tell me if my answer is wrong or not?
Given: C= (matrix(2,2,-3,4,2,5))
B= (matrix(3,2,3,-6,5,7,-4,6))
Question: 3CB
What i've tried: 3(matrix(2,2,-3,4,2,5))* (matrix(3,2,3,-6,5,7,-4,6))
SEE
consider them as 4 vertically aligned matrix symbols:
= 3[-3 4]
[2 5] [7 -4 6]
= 3[ (-3*3+4*7) (-3*-6+4*-4) (-3*5+4*6) ]..LAST DISABLED_event_ONE= -3*6+4*6=6
[ (2*3+5*7) (2*-6+5*-4) (2*5+5*6) ].....LAST DISABLED_event_ONE= 2*6+5*6=42
= 3 [ (-9+28) (18-16) (-15+24) ]...-18+24=6
[ (6+35) (-12-20) (10+30) ].....12+30=42
= 3 [19 2 8].........6
[41 -32 40]................42
= [ 3*19 3*2 3*8 ]...............3*6
[ 3*41 3*-32 3*40]............3*42
= [57 6 24]..................57...6....18
[123 -96 120]................123.-96...126
Final result- (matrix(3,2,57,6,24,123,-96,120))
You may edit the question. Maybe convert formulae to the sa
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