code: def eq2():
      r = Symbol("r")
      e = Rmn.dd(1, 1)
      C = Symbol("CC")
      e = e.subs(nu(r), -lam(r))
      pprint(dsolve(e, lam(r)))
  
imports: from sympy import exp, Symbol, sin, dsolve, Function, Matrix, Eq, pprint, solve
label_desc: Use image node_id 7 for calling a global function with example usage: eq2() without return types