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A student deletes the first row and the second column… | StemPy Lab
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A student deletes the first row and the second column of the table 2 , 0 , 1 ; 3 , 1 , 4 ; 5 , 2 , 6 , finds the determinant of what is left, and then applies the correct sign for that position. What number does the student get?
Mathematics
Easy
High School (11–12)
Algebra › Matrices and Determinants
A-Level
IB
Created by
StemPy Lab
A student deletes the first row and the second column of the table
[
2
0
1
3
1
4
5
2
6
]
\begin{bmatrix} 2 & 0 & 1 \\ 3 & 1 & 4 \\ 5 & 2 & 6 \end{bmatrix}
2
3
5
0
1
2
1
4
6
, finds the determinant of what is left, and then applies the correct sign for that position. What number does the student get?
−
2
-2
−
2
2
2
2
18
18
18
20
20
20
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A 3 × 3 table has zeros above its main diagonal. The diagonal entries are 1, 2 and 6, and the three entries below the diagonal are 3, 4 and 5. What is the determinant of the table? →
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