Data 605 Discussion Week-2

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Student Name : Sachid Deshmukh

Date : 02/05/2019

• GitHub Location for rmd file

• RPubs location of published file

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C23 Doing the computations by hand, find the determinant of the matrix below.

 mat = matrix(c (1,3,2,4,1,3,1,0,1), ncol=3 , nrow=3, byrow=T)
 print(mat)

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

Determinant of the above matrix can be calculated as below

• 1(1X1 - 3X0) - 3(4X1 - 3X1) + 2(4X0 -1X1)
• 1(1) - 3(1) + 2(-1)
• 1 - 3 - 2
• -4

Verify using R

r print(det(mat))

## [1] -4