divyesh1379

2. LMIs are inequalities of the form

 

 

 

where is known and is a variable for i = 0 ... n. However, in controls LMIs are most naturally formulated as

 

  and ,

 

where are known, is symmetric, and s an unknown matrix. Show that any expression of the form 4 can be written in the form 3 (or show the opposite).