Ruby | Matrix I() function

The I() is an inbuilt method in Ruby returns a Identity matrix of N X N size.

Syntax: mat1.I(N)

Parameters: The function accepts a mandatory parameter N which is the size of the Identity matrix.

Return Value: It returns the Identity matrix.

Example 1:

# Ruby program for I() method in Matrix

# Include matrix
require "matrix"

# Initialize a matrix
# using I method
mat1 = Matrix.I(2)

# Print the matrix
puts mat1

Output:

Matrix[[1, 0], [0, 1]]

Example 2:

# Ruby program for I() method in Matrix

# Include matrix
require "matrix"

# Initialize a matrix
# using I method
mat1 = Matrix.I(3)

# Print the matrix
puts mat1

Output:

Matrix[[1, 0, 0], [0, 1, 0], [0, 0, 1]]