1.

The generalized Eigen value problem [K-ω2M]X=0 has a non-zero solution for X. What is the value of natural frequency, ω if K=\(\begin{pmatrix}1&1&1\\1&1&1\\1&1&1\end{pmatrix}\),M=\(\begin{pmatrix}9&9&9\\9&9&9\\9&9&9\end{pmatrix}\)?

A. 3
B. 1/9
C. 9
D. 1/3
Answer» E.


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