Stability
- bstap — hankel approximant
- dtsi — Continuous time dynamical systems stable anti-stable decomposition
- evans — lugar geométrico das raízes Evans
- g_margin — gain margin and associated crossover frequency
- p_margin — phase margin and associated crossover frequency
- plzr — Esboço de pólo-zero
- routh_t — tabela de Routh
- sgrid — esboça linhas de grid de um s-plano
- show_margins — display gain and phase margin and associated crossover frequencies
- st_ility — stabilizability test
- zgrid — esboçode um z-grid