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Mathematics
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part b in the pic yo! although im about to get help off laplace too... so for kicks
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determinant formula = a.d-b.c where a,b,c,d are parts in the matrix reading left to right row by row for a 2x2 matrix
hey sorry i got disconnected
i was beginning to wonder
can you send me the retricedf again
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ok so do you get AX = B, so -x + 2y = 2, x - 2y = 1
yeah i can get that far
hm i guess you got disconnected again, if you make it back im still in twiddle
do you have twiddla? link
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thats an idea
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