The imag() is an inbuilt method in Ruby returns a matrix with only imaginary part in it. The other index are assigned to zero.
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Syntax: mat1.imag() Parameters: The function does not takes any parameter. Return Value: It returns a matrix with only imaginary part.Example 1:
#Ruby program for imag() method in Matrix
#Include matrix
require "matrix"
#Initialize a matrix
mat1
= Matrix[[ Complex(1, 2), 21 ], [ 31, Complex(9, 12) ]]
#prints the imaginary part
puts mat1.imag()
Matrix[[2, 0], [0, 12]]Example 2:
#Ruby program for imag() method in Matrix
#Include matrix
require "matrix"
#Initialize a matrix
mat1
= Matrix[[ Complex(19, 3), Complex(12, 3) ], [ Complex(7, 8), Complex(91, 2) ]]
#prints the imaginary part
puts mat1.imag()
Matrix[[3, 3], [8, 2]]