Hi could you help me with following
$$ \begin{pmatrix} 1 & a & a \\ a & 1 & a \\ a & a & 1 \end{pmatrix} $$
is a $3 \times 3$ matrix.
Find the largest interval for a such that this matrix is positive definite.
How to do this??
Thanks a lot!
Hi could you help me with following
$$ \begin{pmatrix} 1 & a & a \\ a & 1 & a \\ a & a & 1 \end{pmatrix} $$
is a $3 \times 3$ matrix.
Find the largest interval for a such that this matrix is positive definite.
How to do this??
Thanks a lot!