- #1

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Is it possible to find the product of this matrice?

AB if A= 0.....9..... -6

........ -2....-10......7

B= 7

....5

...-2

- Thread starter TonyC
- Start date

- #1

- 86

- 0

Is it possible to find the product of this matrice?

AB if A= 0.....9..... -6

........ -2....-10......7

B= 7

....5

...-2

- #2

Galileo

Science Advisor

Homework Helper

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In general, you can only multiply a axb matrix with cxd matrix if b=c. The result is an axd matrix.

- #3

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(0)(7) + (9)(5) + (-6)(-2) = 57

(-2)(7) + (-10)(5) + (7)(-2) = -78

written:

57

-78

am I correct?

- #4

- 86

- 0

or is it written: [57,-78] ?

- #5

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- #6

- 86

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Thank you very much!

- #7

HallsofIvy

Science Advisor

Homework Helper

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By the way- the singular of "matrices" is "matrix", not "matrice".

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