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Mathematics 7 Online
OpenStudy (anonymous):

thanks

OpenStudy (anonymous):

@Michele_Laino

OpenStudy (anonymous):

B

OpenStudy (michele_laino):

plese you can multiply only matrices for which the number of columns of the first matrix, is equal to the number of rows of the second matrix

OpenStudy (michele_laino):

so [B]*[A] is possible? and: [C]*[B], is possible?

OpenStudy (anonymous):

yes for the first one

OpenStudy (anonymous):

@Michele_Laino

OpenStudy (michele_laino):

and for the second one?

OpenStudy (anonymous):

yes but im not sure

OpenStudy (michele_laino):

what is the number of columns of C

OpenStudy (anonymous):

3? 2x4

OpenStudy (michele_laino):

no, please, C has 4 rows

OpenStudy (michele_laino):

sorry C has 4 columns

OpenStudy (michele_laino):

and what is the number o rows of B?

OpenStudy (anonymous):

2

OpenStudy (michele_laino):

please B has 4 rows, so multiplication [C]*{B] is possible

OpenStudy (anonymous):

so b is right

OpenStudy (michele_laino):

I think that option e) is the right option

OpenStudy (anonymous):

why

OpenStudy (anonymous):

lol sorry ur right my bad

OpenStudy (michele_laino):

because I think that both multiplications [B]*[A] and [C]*[B] are possible

OpenStudy (anonymous):

yes ur right thanks

OpenStudy (michele_laino):

thanks

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