Exemple #1
0
 def _eval_rewrite_as_exp(self, arg):
     neg_exp, pos_exp = S.Exp(-arg), S.Exp(arg)
     return (pos_exp + neg_exp) / (pos_exp - neg_exp)
Exemple #2
0
 def _eval_rewrite_as_exp(self, arg):
     return (S.Exp(arg) + S.Exp(-arg)) / 2