Add commented out part of initial condition

hw2/skeleton/p1/auxiliary.cpp

@@ -51,7 +51,7 @@ WaveEquation::~WaveEquation() {
 
 double WaveEquation::Initial_Condition(double x0, double x1, double x2) {
   double r =
-      (x0 - 0.5) * (x0 - 0.5) + (x1 - 0.5) * (x1 - 0.5); //+ (x2-0.5)*(x2-0.5);
+      (x0 - 0.5) * (x0 - 0.5) + (x1 - 0.5) * (x1 - 0.5) + (x2-0.5)*(x2-0.5);
   return exp(-r / 0.1);
 }