Matrix and Margin Array in R Programming

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Nama Mahasiswa : Syafri Maulana Alfatih

NIM : 220605110139

Kelas : B

Mata Kuliah : Linear Algebra

Dosen Pengampu : Prof.Dr.Suhartono,M.Kom

Prodi : Teknik Informatika

Universitas : UIN Maulana Malik Ibrahim Malang

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A = matrix(1:9, 3, 3)
print(A)

##      [,1] [,2] [,3]
## [1,]    1    4    7
## [2,]    2    5    8
## [3,]    3    6    9

r = apply(A, 1, sum)
print(r)

## [1] 12 15 18

c = apply(A, 2, sum)
print(c)

## [1]  6 15 24

A = matrix(1:9, 3, 3) 
print(A) 

##      [,1] [,2] [,3]
## [1,]    1    4    7
## [2,]    2    5    8
## [3,]    3    6    9

r = apply(A, 1, prod) 
print(r) 

## [1]  28  80 162

c = apply(A, 2, prod) 
print(c) 

## [1]   6 120 504