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:
# R program to calculate # inverse of a matrix # Loading library library(matlib) # Create 3 different vectors. a1 <- c(3, 2, 8) a2 <- c(6, 3, 2) a3 <- c(5, 2, 4) # Bind the 3 matrices row-wise # using the rbind() function. A <- rbind(a1, a2, a3) # find inverse using the inv() function. 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:
# R program to calculate # inverse of a matrix # Loading Library library(matlib) # Creating a matrix A = matrix(c(2, 5, 3, 4, 5, 2, 6, 3, 4), 3, 3) det(A) # Calling inv() function 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
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