From c6795f2ccf250f97e1bb6ed20519af3f17cd9066 Mon Sep 17 00:00:00 2001
From: Martin Bauer <martin.bauer@fau.de>
Date: Thu, 15 Mar 2018 08:52:08 +0100
Subject: [PATCH] Fixed in derivative operator
---
derivative.py | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/derivative.py b/derivative.py
index e3c8722e5..fca807113 100644
--- a/derivative.py
+++ b/derivative.py
@@ -152,7 +152,7 @@ class DiffOperator(sp.Expr):
args = normalizeProduct(mul)
diffs = [a for a in args if isinstance(a, DiffOperator)]
if len(diffs) == 0:
- return mul
+ return mul * argument
rest = [a for a in args if not isinstance(a, DiffOperator)]
diffs.sort(key=defaultDiffSortKey)
result = argument
@@ -166,7 +166,7 @@ class DiffOperator(sp.Expr):
elif expr.func == sp.Add:
return expr.func(*[handleMul(a) for a in expr.args])
else:
- return expr
+ return expr * argument
# ----------------------------------------------------------------------------------------------------------------------
--
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