Finding Inverse of a Matrix in R Programming – inv() Function
Last Updated :
19 Jun, 2020
inv()
function in R Language is used to calculate inverse of a matrix.
Note: Determinant of the matrix must not be zero
Syntax: inv(x)
Parameters:
x: Matrix
Example 1:
library(matlib)
a1 < - c( 3 , 2 , 8 )
a2 < - c( 6 , 3 , 2 )
a3 < - c( 5 , 2 , 4 )
A < - rbind(a1, a2, a3)
print (inv(A))
|
Output:
[, 1] [, 2] [, 3]
[1, ] -0.2857143 -0.2857143 0.7142857
[2, ] 0.5000000 1.0000000 -1.5000000
[3, ] 0.1071429 -0.1428571 0.1071429
Example 2:
library(matlib)
A = matrix(c( 2 , 5 , 3 , 4 , 5 , 2 , 6 , 3 , 4 ), 3 , 3 )
det(A)
cat( "Inverse of A:\n" )
inv(A)
|
Output:
[1] -46
Inverse of A:
[, 1] [, 2] [, 3]
[1, ] -0.3043478 0.08695652 0.3913044
[2, ] 0.2391304 0.21739130 -0.5217391
[3, ] 0.1086957 -0.17391304 0.2173913
Like Article
Suggest improvement
Share your thoughts in the comments
Please Login to comment...