docstr: This is a method just to generate roots
  with a -1 in the ith position and a 1
  in the jth position.
docstr_tok: ["This","is","a","method","just","to","generate","roots","with","a","-1","in","the","ith","position","and","a","1","in","the","jth","position","."]
code: def basic_root(self, i, j):
      """
      This is a method just to generate roots
      with a -1 in the ith position and a 1
      in the jth position.
  
      """
  
      root = [0] * 8
      root[i] = -1
      root[j] = 1
      return root
  
file_path: sympy/sympy/liealgebras/type_e.py
imports: from .cartan_type import Standard_Cartan
  from sympy.core.backend import eye, Rational
label_desc: Use image node_id 3 for calling the TypeE obj's underlying member method code with example usage: obj.basic_root(i, j) and returns: root