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anonymous
 one year ago
Evaluate
anonymous
 one year ago
Evaluate

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freckles
 one year ago
Best ResponseYou've already chosen the best response.3multiplying a 3 by 2 with a 2 by 3 will result in a 3 by 3 the inner numbers have to match then the dimensions of the product will be the exterior numbers there

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0wait, what do you mean 3 by 2 and 2 by 3?

freckles
 one year ago
Best ResponseYou've already chosen the best response.3those are the dimensions of your matrices respectively

freckles
 one year ago
Best ResponseYou've already chosen the best response.3anyways to find the entries you do rows from the first matrix with columns of the second matrix

freckles
 one year ago
Best ResponseYou've already chosen the best response.3for example entry 1 will be 2(5)+0(0)

freckles
 one year ago
Best ResponseYou've already chosen the best response.3in general the first element in the product matrix would look like this \[\left[\begin{matrix}a_{11} & a_{12} \\ a_{21} & a_{22} \\ a_{31} & a_{32}\end{matrix}\right] \cdot \left[\begin{matrix}b_{11} & b_{12} & b_{13} \\ b_{21} & b_{22} & b_{23}\end{matrix}\right] \\ =\left[\begin{matrix}a_{11} \cdot b_{11}+a_{12} \cdot b_{21} & ? & ? \\ ? & ? & ? \\ ? & ? & ?\end{matrix}\right]\]

freckles
 one year ago
Best ResponseYou've already chosen the best response.3basically we did the dot product of <a11,a12> and <b11,b21>

freckles
 one year ago
Best ResponseYou've already chosen the best response.3to find the first entry that is

freckles
 one year ago
Best ResponseYou've already chosen the best response.3dw:1438660253075:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0this is so confusing, omg.

freckles
 one year ago
Best ResponseYou've already chosen the best response.3dw:1438660316576:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Oh, okay okay, I get it now! Thank you!

freckles
 one year ago
Best ResponseYou've already chosen the best response.3https://en.wikipedia.org/wiki/Matrix_multiplication just in case I don't really want to type it all out but wikepedia already did you can see they multiplied a 3 by 2 with a 2 by 3 here look under rectanglular matrices BA

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.0Whats the formula @dan815 :)

freckles
 one year ago
Best ResponseYou've already chosen the best response.3already did a formula for a 3 by 2 with a 2 by 3 *
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