Twelfth Commit

Author: GreatCoder1000

.gitignore

@@ -0,0 +1,5 @@
+bin/
+obj/
+*.exe
+
+.fake

MultiplyOperator.cs

@@ -98,6 +98,33 @@ public IMathExpression Simplified()
             return new MultiplyOperator(simplifiedRight, simplifiedLeft);
         }
 
+        // Distribution!!!
+        if (simplifiedLeft is AddOperator a && (simplifiedRight is Scalar || simplifiedRight is Variable))
+        {
+            return new AddOperator(new MultiplyOperator(a.Left, simplifiedRight), new MultiplyOperator(a.Right, simplifiedRight)).Simplified();
+        }
+
+        // Distribution!!!
+        if (simplifiedRight is AddOperator b && (simplifiedLeft is Scalar || simplifiedLeft is Variable))
+        {
+            return new AddOperator(new MultiplyOperator(b.Left, simplifiedLeft), new MultiplyOperator(b.Right, simplifiedLeft)).Simplified();
+        }
+
+        // Defactor!!
+        if (simplifiedLeft is AddOperator c && simplifiedRight is AddOperator d)
+        {
+            // (c1 + c2)(d1 + d2) = (c1 + c2)d1 + (c1 + c2)d2 = c1d1 + c2d1 + c2d2 + c1d2
+            return new AddOperator(
+                new AddOperator(
+                    new MultiplyOperator(c.Left, d.Left), 
+                    new MultiplyOperator(c.Right, d.Left)
+                ), new AddOperator(
+                    new MultiplyOperator(c.Left, d.Right), 
+                    new MultiplyOperator(c.Right, d.Right)
+                )
+            ).Simplified();
+        }
+
         return combinedExpression;
     }
 

Program.cs

@@ -58,6 +58,7 @@
                     Console.WriteLine("Exitting Sym# CAS Mode 2... ");
                     break;
                 }
+                
                 // Parse the user input into an expression and show its derivative.
                 var y = SymFactory.FromString(yDef);
                 Console.WriteLine($"dy/dx = {y.Derivative("x")}");

bin/Debug/net9.0/SymSharp.dll

@@ -13,7 +13,7 @@
 [assembly: System.Reflection.AssemblyCompanyAttribute("SymSharp")]
 [assembly: System.Reflection.AssemblyConfigurationAttribute("Debug")]
 [assembly: System.Reflection.AssemblyFileVersionAttribute("1.0.0.0")]
-[assembly: System.Reflection.AssemblyInformationalVersionAttribute("1.0.0+3f0be9c27c52ea56d56e6ab9314bd50d30186674")]
+[assembly: System.Reflection.AssemblyInformationalVersionAttribute("1.0.0+27e745b92bf6a3321f09f17d475f17caacf8ed60")]
 [assembly: System.Reflection.AssemblyProductAttribute("SymSharp")]
 [assembly: System.Reflection.AssemblyTitleAttribute("SymSharp")]
 [assembly: System.Reflection.AssemblyVersionAttribute("1.0.0.0")]

bin/Debug/net9.0/SymSharp.exe

@@ -1 +1 @@
-f12525410d644237c0ceebf66529e4d78d5f7566ad1355f8087b35b2c54d8cd1
+8b4e3f8ac5060963fe52bdf18da42c7a6a7f83ac8ab9e8563c7f5d8966448f0b