diff --git a/build.bash b/build.bash
index 0fcb130..c937bef 100755
--- a/build.bash
+++ b/build.bash
@@ -13,7 +13,7 @@ filename="${filename%.*}"
 mkdir -p "build/$filename"
 
 # Compile the C++ file
-g++ -o "build/$filename/$filename" "$1"
+g++ -I /usr/include/eigen3 -o "build/$filename/$filename" "$1"
 
 # Check if the compilation was successful
 if [ $? -eq 0 ]; then
diff --git a/wandbox.cpp b/wandbox.cpp
index d353b3f..e1f1a5d 100644
--- a/wandbox.cpp
+++ b/wandbox.cpp
@@ -5,10 +5,14 @@
 #include <unordered_map>
 #include <vector>
 
+#include <Eigen/Dense>
+
 using std::cout;
 using std::endl;
 
 int main(int argc, char* argp[]) {
+	Eigen::Vector2d X = Eigen::Vector2d::Ones();
+	cout << "X: " << X.transpose() << endl;
     int counter = 0;
     int b = 10;
 	int x= 10;