anonymous
  • anonymous
Find the value of the determinant of the matrix
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
1 Attachment
austinL
  • austinL
|A| = a(ei - fh) - b(di - fg) + c(dh - eg)
1 Attachment
amistre64
  • amistre64
i do a short cut that is related to the 2x2 determinant

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amistre64
  • amistre64
copy the first 2 columns, and tag them on the end, the run the diagonals
amistre64
  • amistre64
-(0-12-10) 1 -1 0 1 -1 2 1 4 2 1 5 -3 5 5 -3 +(5-20+0)
austinL
  • austinL
I vaguely remember being taught your way @amistre64
amistre64
  • amistre64
:) i wish i was taught my way ... lol
amistre64
  • amistre64
the "official" method simplifies to that way is all
anonymous
  • anonymous
so it would be 7?
austinL
  • austinL
Correct.
anonymous
  • anonymous
yay, thanks for the help guys!
austinL
  • austinL
No problemo :)

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