United States of America
Grades 9-12
10.05 Cofactors and determinants
Interactive practice questions
Consider the following matrix
| $4$4 | $0$0 | $8$8 | ||||
| $6$6 | $9$9 | $5$5 | ||||
| $7$7 | $2$2 | $3$3 |
a
Find the cofactor of the element $6$6.
b
Find the cofactor of the element $9$9.
c
Find the cofactor of the element $5$5.
Easy
7min
Consider the following matrix
| $7$7 | $5$5 | $2$2 | ||||
| $0$0 | $3$3 | $-4$−4 | ||||
| $-6$−6 | $1$1 | $-8$−8 |
Easy
6min
Consider the following matrix
| $-8$−8 | $0$0 | $1$1 | ||||
| $6$6 | $9$9 | $2$2 | ||||
| $5$5 | $4$4 | $-7$−7 |
Easy
6min
Consider the following matrix
| $3$3 | $-5$−5 | $9$9 | ||||
| $2$2 | $1$1 | $6$6 | ||||
| $7$7 | $4$4 | $-8$−8 |
Easy
7min
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