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Mathematics 8 Online
OpenStudy (anonymous):

how do i multiply matix "Au" when u is vector (3,2,5) i have a 3x3 matrix

OpenStudy (anonymous):

take ur vector to be a 3x1 matrix [3 2 5]

OpenStudy (anonymous):

and do normal matrix multiplication

OpenStudy (anonymous):

is this the same for vector v which is (-1,0,3)

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

2 5 7 4 -6 3 16 -5 0 the answer is (51,15,38), i am just not getting it

OpenStudy (anonymous):

treat it downward...sorry...my bad

OpenStudy (anonymous):

2 5 7 3 4 -6 3 x 2 16 -5 3 5

OpenStudy (anonymous):

= [ 2.3 + 5.2 + 7.5 4.3-6.2+3.5 16.3 - 5.2 + 3.5] = [51 15 38]

OpenStudy (anonymous):

ur the man, i was not seeing that

OpenStudy (anonymous):

no probs thnx

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