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12. CC.HSA.REI.D.11
12.5 The inverse of 3 x 3 matrix with determinants and adjugate
Four-step method to find a 3x3 inverse using determinants and adjugate
Four-step method to find a 3x3 inverse using determinants and adjugate
25:09
About this lesson
The Inverse of 3 x 3 Matrix Overview:
a) \(\)\(\) The Matrix of Minors
b) \(\)\(\) The Adjugate Matrix
c) \(\)\(\) Transpose
d) \(\)\(\) Multiply by \(\;\frac{1}{determinant\; of\; original\; matrix}\)
a) \(\)\(\) The Matrix of Minors
b) \(\)\(\) The Adjugate Matrix
c) \(\)\(\) Transpose
d) \(\)\(\) Multiply by \(\;\frac{1}{determinant\; of\; original\; matrix}\)
Key Moments
No key moments available.
Video 1 of 7
Four-step method to find a 3x3 inverse using determinants and adjugate
25 min
• Selected
Finding the matrix of minors for a 3x3 matrix
8 min
Finding the adjugate matrix using the checkerboard sign pattern
5 min
Transposing the adjugate matrix (Step 3)
3 min
Finding the inverse using the determinant and adjugate matrix
10 min
Finding the inverse of a 3x3 matrix using all four steps
24 min
Finding the inverse of a 3x3 matrix using the four-step method
20 min