Changeset 16213 for trunk/HeuristicLab.Problems.DataAnalysis.Symbolic/3.4/Converters/DerivativeCalculator.cs

Timestamp:

10/06/18 08:56:14 (6 years ago)

Author:

gkronber

Message:

#2948 changed unit test cases to assert results of derivative calculations. Fixed bug in deriving sqrt(x)

File:

• trunk/HeuristicLab.Problems.DataAnalysis.Symbolic/3.4/Converters/DerivativeCalculator.cs (modified) (1 diff)

trunk/HeuristicLab.Problems.DataAnalysis.Symbolic/3.4/Converters/DerivativeCalculator.cs

@@ -120 +120 @@
         var f = (ISymbolicExpressionTreeNode)branch.Clone();
         var u = (ISymbolicExpressionTreeNode)branch.GetSubtree(0).Clone();
-        return Div(CreateConstant(1.0), Product(Product(CreateConstant(2.0), f), Derive(u, variableName)));
+        return Product(Div(CreateConstant(1.0), Product(CreateConstant(2.0), f)), Derive(u, variableName));
       }
       if (branch.Symbol is Sine) {