diff: add the missing power for higher order derivatives

1 files changed, 1 insertions, 1 deletions

diff --git a/diff.py b/diff.py
index bd9a135..553ee69 100644
--- a/diff.py
+++ b/diff.py
@@ -113,7 +113,7 @@ class FiniteDifferenceUniform(object):
 
         for s, c in zip(slices_src, coeff):
             ret[tuple(slicelist_ret)] += c * arr[tuple(s)]
-        ret[tuple(slicelist_ret)] /= (div * dx)
+        ret[tuple(slicelist_ret)] /= (div * (dx ** self.diff_order))
 
         if bound_lower:
             if self.acc_order > 2: