diff --git a/interp/tools.py b/interp/tools.py
index 937f4d0..875e09e 100644
--- a/interp/tools.py
+++ b/interp/tools.py
@@ -48,7 +48,9 @@ def exact_func(X):
   """
   x = X[0]
   y = X[1]
-  return np.power((np.sin(x * np.pi) * np.cos(y * np.pi)), 2)
+  answer = np.power((np.sin(x * np.pi) * np.cos(y * np.pi)), 2)
+  log.debug(answer)
+  return answer
 
 def exact_func_3D(X):
   """
@@ -57,7 +59,9 @@ def exact_func_3D(X):
   x = X[0]
   y = X[1]
   z = X[2]
-  return np.power((np.sin(x * np.pi / 2.0) * np.sin(y * np.pi / 2.0) * np.sin(z * np.pi / 2.0)), 2)
+  answer = np.power((np.sin(x * np.pi / 2.0) * np.sin(y * np.pi / 2.0) * np.sin(z * np.pi / 2.0)), 2)
+  log.debug(answer)
+  return answer
 
 def improved_answer(answer, exact, verbose=False):
   if not answer['error']: