## 2. Rayleigh-Ritz procedure (cont'd)

The $$w_i$$ represent, for example, displacement fields for a mechanical problem, and are functions of the spatial coördinates $$\mathbf{x}$$.

The value of $$n$$ is chosen to be as small as is consistent with the accuracy required of the answer. The particular set of basis functions used is more or less arbitrary, as long as they are independent and admissible.

R. Funnell