A 4 \times 4 control system has the following gain matrix:
K =\left[\begin{array}{llll}9.82 & 4.49 & 1.40 & 4.56 \\8.99 & 5.47 & 1.68 & 5.24 \\4.59 & 5.80 & 2.31 & 7.33 \\2.41 & 4.33 & 2.82 & 8.92\end{array}\right]
Assess the potential difficulty of control using singular value analysis. Should any outputs or inputs be eliminated to achieve better control?