||'''Book'''|| Linear Algebra ||
 ||'''Author'''|| Gilbert Strang ||
 ||'''Edition'''||  ||

/* code_begins */

{{{
# Example 3, Page 238
lambda1 = var('lambda1')
A = matrix([[1 - lambda1, 4, 5], [0, 3/4 - lambda1, 6], [0, 0, 1/2 - lambda1]])
print A.eigenvalues()
}}}

/* code_ends */

 * '''Solution by''': 
   * Ragupathy, Teacher, Ramakrishna Mission Vidyalaya
   * Venkata Ramana, Teacher, Ramakrishna Mission Vidyalaya