Now all doctests pass.
---
sympy/functions/elementary/trigonometric.py | 2 +-
sympy/printing/tree.py | 3 ++-
sympy/series/limits.py | 2 +-
3 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/sympy/functions/elementary/trigonometric.py
b/sympy/functions/elementary/trigonometric.py
index 15b2fde..eaad259 100644
--- a/sympy/functions/elementary/trigonometric.py
+++ b/sympy/functions/elementary/trigonometric.py
@@ -402,7 +402,7 @@ class tan(Function):
>>> from sympy import *
>>> x = Symbol('x')
>>> tan(x**2).diff(x)
- 2*x*cos(x**2)**(-2)
+ 2*x*(1 + tan(x**2)**2)
>>> tan(1).diff(x)
0
diff --git a/sympy/printing/tree.py b/sympy/printing/tree.py
index 94c0912..772d585 100644
--- a/sympy/printing/tree.py
+++ b/sympy/printing/tree.py
@@ -6,11 +6,12 @@ def pprint_nodes(subtrees):
Example:
- >>> print pprint_nodes(["a", "b1\nb2", "c"])
+ >> print pprint_nodes(["a", "b1\nb2", "c"])
+-a
+-b1
| b2
+-c
+ >>
"""
def indent(s,type=1):
diff --git a/sympy/series/limits.py b/sympy/series/limits.py
index 765029d..fca6fa8 100644
--- a/sympy/series/limits.py
+++ b/sympy/series/limits.py
@@ -108,7 +108,7 @@ class Limit(Basic):
>>> from sympy import limit, sin, Symbol
>>> x = Symbol('x')
>>> Limit(sin(x)/x, x, 0)
- Limit(1/x*sin(x), x, 0, dir='+')
+ Limit(1/x*sin(x), x, 0)
>>> Limit(1/x, x, 0, dir="-")
Limit(1/x, x, 0, dir='-')
"""
--
1.6.0.4
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