Fig. 4From: Finite increment calculus (FIC): a framework for deriving enhanced computational methods in mechanics1D Helmholtz problem (\(Q=0\)). Exact and FIC–FEM results for a uniform mesh of eight 2-noded elements of length \(l^e\). a \(\gamma =0\), \(\omega =-5\); b \(\gamma =0\), \(\omega =-100\) \(\left( \gamma = \frac{\rho c u l^e}{2k}, w = \frac{s(l^e)^2}{k}\right) \) [6, 28]Back to article page