JbigtonLaral JbigtonLaral
  • 01-06-2017
  • Mathematics
contestada

How to find the determinant of a 3x3 matrix?

Respuesta :

jennifernewman
jennifernewman jennifernewman
  • 01-06-2017
this is how

1. Write your 3 x 3 matrix. More ↓
2. Choose a single row or column. ↓
3. Cross out the row and column of your first element. ↓
4. Find the determinant of the 2 x 2 matrix. ↓
5. Multiply the answer by your chosen element. ↓
6. Determine the sign of your answer. ↓
7. Repeat this process for the second element in your reference row or column. ↓
8. Repeat with the third element. ↓
9. Add your three results together. ↓

Hope this helps!
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