Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
For what value of
k
k
k
is the matrix
C
=
(
1
2
3
4
k
6
7
8
9
)
C=\begin{pmatrix}1 & 2 & 3\\ 4 & k & 6\\ 7 & 8 & 9\end{pmatrix}
C
=
1
4
7
2
k
8
3
6
9
singular?
Browse the problem library