Matracies? These are pretty easy, but I'm not really sure what the question is asking me. Help please! There's a picture of the Matracies that I need help on, any help is appreciated (:

Question

anonymous · Answer

attachment

anonymous · Answer

Which question is it ? the 1st or the 2nd?

anonymous · Answer

I'm having trouble with both, I got both wrong :/

anonymous · Answer

you know for the first multiple both matrixes then choose the element it ask for

anonymous · Answer

That's what I did Lol :/ How off am I?

anonymous · Answer

Well, you could do the whole multiplication, but it is probably easier to figure out which row and column interact to give the requested number.  It seems to me that the fourth row and first column of the product will be the fourth row of H multiplied by the first column of F.  I get negative three.

anonymous · Answer

When you say "the fourth row of H multiplied by the first column of F", are you talking about the entire row and comlumn? Or a specific number from each

anonymous · Answer

The row elements multiply by the corresponding column elements, then are summed.

anonymous · Answer

q 1 is -3

anonymous · Answer

The answer to the second question is fourteen, using a similar method.

anonymous · Answer

remember it is HF :)  for first one if you did fh you did it wrong because it is not even possible 

ab
cd
ef
gh

4th row  1st  colum is g i did math for you and i got -3 on  the matrix

anonymous · Answer

|dw:1340255849196:dw|

Can you show me what you mean on this please?