Stability Analysis of Nonuniform Rectangular Beams Using Homotopy Perturbation Method

Table 1

Cosines of angles between axes [1].

	𝑥	𝑦	𝑧
𝜉	1	𝜙	−𝑑𝑢/𝑑𝑧
𝜂	−𝜙	1	−𝑑𝑣/𝑑𝑧
𝜁	𝑑𝑢/𝑑𝑧	𝑑𝑣/𝑑𝑧	1