Let

, where A is a symmetric
matrix with eigenvalues
and associated orthonormal eigenvectors

. Then subject to the constraints
and

, the minimum value of
is

, attained at

.

Question

Let 
  
, where A is a symmetric 
  matrix with eigenvalues 
  and associated orthonormal eigenvectors 
  
. Then subject to the constraints 
  and 
  
, the minimum value of 
  is 
  
, attained at 
  
.

Quizplus · Accepted Answer

The Answer of Let 
  
, where A is a symmetric 
  matrix with eigenvalues 
  and associated orthonormal eigenvectors 
  
. Then subject to the constraints 
  and 
  
, the minimum value of 
  is 
  
, attained at 
  
.

Let , Where a Is a Symmetric