Stability

• bstap — hankel approximant
• dtsi — Continuous time dynamical systems stable anti-stable decomposition
• evans — Evans root locus
• g_margin — gain margin and associated crossover frequency
• p_margin — phase margin and associated crossover frequency
• plzr — график нулей и полюсов
• routh_t — Routh's table
• sgrid — draws a s-plane grid
• show_margins — display gain and phase margin and associated crossover frequencies
• st_ility — stabilizability test
• zgrid — zgrid plot