DATA 605 Week 1 Discussion

Doing the computations by hand, find the determinant of the matrix A.

Solution:

Verify

C <- matrix(c(1,0,1,1,2,2,-1,1,2,1,3,0,1,1,0,1), nrow=4, byrow=T)
C

##      [,1] [,2] [,3] [,4]
## [1,]    1    0    1    1
## [2,]    2    2   -1    1
## [3,]    2    1    3    0
## [4,]    1    1    0    1

det(C)

## [1] 4