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matrices the question is attached

Mathematics
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do you recall how to add and multiply matrixes?

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yeah
i have subtruct C with B then I lost :S
Adding matrixes is just adding component parts; like vectors right? |4 3| + |1 5 | = |5 8| right? |1 2| |6 6| |7 8|
yeah so??
Is X supposed to be the same for part a and part b? Or are you to find an X matrix for each on ?
just trying to recall my matrix properties; if you want someone elses help; i can always leave :)
its X supposed to be the same for part a and part b
B and C look familiar; like they are .... the same somehow; cant recall how to transform B into C like that.... is it with an inverse matrix?
frankly dont know:S:S
i looked it up; its close; but no; there are different terms in C...bummer
If we subtract B from C we will see what AX has to look like right?
which is prolly what you said you did up there ;)
yeah wich is AX=C-B so we multiply with the inverse of A ?
maybe; what is C-B; can you type it?
\[AX=C -B\]
C - B = |-2 -4| |-8 -1| right?\[((-2 & -4 \ -8 & -1))\]
the equation editor failed on me lol
yeah
AX = |5 3| * |a b| = |5a +3c = -2 5b +3d= -4| |3 2| |c d| |3a +2c = -8 3b +2d= -1| right?
And: |a b| * |5 3| = |5a +b3 = -2 a3 +b2= -4| |c d| |3 2| |c5 +d3 = -8 c3 +d2= -1| if I did it right...
lets see if we can equate these things :) 5a +3c = 5a + 3b 3c - 3b = 0 ---------------- 5b + 3d = 3a + 2b 3b + 3d + 3a = 0 ----------------- 3a + 2c = 5c + 3d 3a -3c - 3d = 0 ----------------- 3b+2d = 3c + 2d 3b - 3c = 0
3b + 3d +3a = 3a -3c -3d 3b + 3c + 6d = 0
my internet source is closing; so thats as far as I can get you :/ good luck with it :) Just equate and solve for a solution to the equations and youll be fine... :)
thanks:)

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