old_contents: from mcircuit import invLT
  import sympy as sym
  
  t, s = sym.symbols('t s')
  
  H = (sym.exp(10 * s) * (s + 3))/ (s**2 + 5 * s + 6)
  
  sym.pprint(sym.Eq(sym.sympify('H'), H))
  
  sym.pprint(sym.Eq(sym.sympify('h'), invLT(H, s, t)))
  
  
new_contents: from mcircuit import invLT
  import sympy as sym
  
  t, s = sym.symbols('t s')
  
  H = (sym.exp(10 * s) * (s + 4))/ (s**2 + 5 * s + 6)
  
  sym.pprint(sym.Eq(sym.sympify('H'), H))
  
  sym.pprint(sym.Eq(sym.sympify('h'), invLT(H, s, t)))
  
  
subject: Handle delays