Science, Numerical Analysis, Ritz.
from Equation 20 and finally to resolve the n algebraic equations one should compute Kᵢⱼ and Fᵢ in order to set up n required algebraic equations. Recalling the approximate function as φᵢ(x)=0.5xⁱ we consider other parameters of the problem as EA=1 N, l=1 m, and b= x as well as the axial point load