XXX base with lt ~ x

diofant · Dec 6, 2015 · 6749a87 · 6749a87
1 parent df71771
commit 6749a87
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/sympy/core/power.py b/sympy/core/power.py
@@ -1265,6 +1265,10 @@ def _taylor(expr, x, n):
         f0 = b.limit(x, 0)
         a = e
 
+        if f0 is S.Zero:
+            lt = b.as_leading_term(x)
+            return lt**a*((b/lt)*a)._eval_nseries(x, n, logx)
+
         from sympy.functions.combinatorial.factorials import factorial, binomial
         from sympy.functions.elementary.complexes import arg
         from sympy.functions.elementary.integers import floor