Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
Given that there exists a matrix
B
B
B
such that
A
B
=
I
2
AB=I_2
A
B
=
I
2
for
A
=
(
k
2
3
1
)
,
A=\begin{pmatrix}k & 2\\ 3 & 1\end{pmatrix},
A
=
(
k
3
2
1
)
,
state the restriction on
k
k
k
and list all real values it may take.
Browse the problem library