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Slipknotalexan
@Slipknotalexan
April 2020
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2) Sendo A = [[ 1 3 ]], B =[[ 2 -1]] e C= [[ 0 -6 ]] determine:
[[ 2 4 ]] [[ 4 0 ]] [[ 4 2 ]]
a) A + B
b) 2A – (B + C)
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JimmyNeutron
A = [[ 1 3 ]], B =[[ 2 -1]] e C= [[ 0 -6 ]]
[[ 2 4 ]] [[ 4 0 ]] [[ 4 2 ]]
a ) A + B
[[1 3]] + [[ 2 -1]] = [[ 3 2]]
[[ 2 4]] [[ 4 0]] [[ 6 4]]
b ) 2A - (B+C)
primeiro calculamos B + C
[[ 2 -1]] + [[ 0 -6 ]] = [[ 2 -7]]
[[ 4 0 ]] [[ 4 2 ]] [[ 8 2]]
agora calculamos 2A
2. [[ 1 3 ]] = [[ 2 6 ]]
[[ 2 4 ]] [[ 4 8 ]]
agora fazemos a subtração :
[[ 2 6 ]] - [[2 -7]] = [[ 0 13 ]]
[[ 4 8 ]] [[8 2]] [[-4 6 ]] → resultado final
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[[ 2 4 ]] [[ 4 0 ]] [[ 4 2 ]]
a ) A + B
[[1 3]] + [[ 2 -1]] = [[ 3 2]]
[[ 2 4]] [[ 4 0]] [[ 6 4]]
b ) 2A - (B+C)
primeiro calculamos B + C
[[ 2 -1]] + [[ 0 -6 ]] = [[ 2 -7]]
[[ 4 0 ]] [[ 4 2 ]] [[ 8 2]]
agora calculamos 2A
2. [[ 1 3 ]] = [[ 2 6 ]]
[[ 2 4 ]] [[ 4 8 ]]
agora fazemos a subtração :
[[ 2 6 ]] - [[2 -7]] = [[ 0 13 ]]
[[ 4 8 ]] [[8 2]] [[-4 6 ]] → resultado final