Add more precise comments

src/optimizer.cpp

@@ -24,13 +24,13 @@ GradientRootfinder::optimize(Function<Coordinate<double>, double>& func,
 Coordinate<double>
 ConjugateGradient::optimize(Function<Coordinate<double>, double>& func,
                             Coordinate<double>& start, double precision) const {
-	// TODO Problem 3
+	// TODO Problem 3 Task 2
     return start;
 }
 
 Coordinate<double>
 ConjugateGradient::CGstep(Function<Coordinate<double>, double>& func,
                             Coordinate<double>& start, double precision) const {
-	// TODO Problem 3
+	// TODO Problem 3 Task 1
     return start;
 }