Dunkerley's formula

a. Finds the natural frequencies and mode shapes of the system, one at a time, using several trial values for each frequency.

b. Finds all the natural frequencies using trial vectors and matrix deflation procedure.

c. Finds all the eigenvalues and eigenvectors simultaneously without using trial vectors.

d. Finds the approximate value of the fundamental frequency of a composite system.

e. Finds the approximate value of the fundamental frequency of a system that is always larger than the true value.