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The Undamped Building.
(a) Show that Eqs.(1)through(3) can be expressed in matrix notation as
Where
and
(b) A real
And is therefore positive definite.
(c) Eigenvalues and eigenvectors of real
Thus all eigenvalues of
(d) For the cases
(e) Since
Of the solution of
Substitute the representation (iii) into the differential equation and initial conditions in Eqs. (iv)and use the fact that
Where
(f) An unforced pure mode of vibration, say, the
Thus the natural frequency of the
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Chapter 6 Solutions
Differential Equations: An Introduction to Modern Methods and Applications
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