diff --git a/imageInput.c b/imageInput.c
index bb30de1..2e89d2a 100644
--- a/imageInput.c
+++ b/imageInput.c
@@ -19,4 +19,11 @@ GrayScaleImageSeries *readImages(const char *path)
 // TODO Vervollständigen Sie die Funktion clearSeries, welche eine Bildserie vollständig aus dem Speicher freigibt
 void clearSeries(GrayScaleImageSeries *series)
 {
+	for(size_t i = GrayScaleImageSeries.count - 1; i >= 0; i--)
+	{
+		free(GrayScaleImageSeries.images+GrayScaleImageSeries.count*sizeof(GrayScaleImage)*i);
+		free(GrayScaleImageSeries.labels+GrayScaleImageSeries.count*sizeof(unsigned char)*i);
+	}
+	GrayScaleImageSeries.images = NULL;
+	GrayScaleImageSeries.labels = NULL;
 }
\ No newline at end of file
diff --git a/matrix.c b/matrix.c
index e69ebd6..934900e 100644
--- a/matrix.c
+++ b/matrix.c
@@ -13,49 +13,65 @@ typedef struct Matrix {
 
 Matrix createMatrix(unsigned int rows, unsigned int cols)
 {
-
+    Matrix newMatrix;
+	newMatrix.rows = rows;
+	newMatrix.cols = cols;
+	newMatrix.buffer = calloc(rows*cols, sizeof(MatrixType))
+	return newMatrix;
 }
 
 void clearMatrix(Matrix *matrix)
 {
-    
+    free(*matrix.buffer);
+	*matrix.buffer = NULL;
 }
 
 void setMatrixAt(MatrixType value, Matrix matrix, unsigned int rowIdx, unsigned int colIdx)
 {
-    
+    if (rowIdx >= matrix.rows || colIdx >= matrix.cols){
+        printf("Index out of bounds\n"); //Error Message because Index Input exceeds Matrix
+}
+    else{
+        matrix.buffer[rowIdx * matrix.cols + colIdx] = value; //Writes Value of value variable in the selected place in Matrix
+}
 }
 
 MatrixType getMatrixAt(const Matrix matrix, unsigned int rowIdx, unsigned int colIdx)
 {
-    
+    if (rowIdx >= matrix.rows || colIdx >= matrix.cols){
+       printf("Index out of bounds\n");
+       return 0;
+    }
+    else{
+
+       MatrixType value = matrix.buffer[rowIdx * matrix.cols + colIdx]; //Stores value of selected place of Matrix in value variable
+        return value;
 }
+  }
 
 Matrix add(const Matrix matrix1, const Matrix matrix2)
 {
-    
+    Matrix MatrixErgebnis = createMatrix(matrix1.rows, matrix1.cols); //Creating Result Matrix
+    if(matrix1.cols != matrix2.cols || matrix1.rows != matrix2.rows){
+        printf("Matrix dimensions do not match\n"); //Error Message if dimensions of Input Matrixes are not identical
+        MatrixErgebnis = clearMatrix(MatrixErgebnis);
+        return MatrixErgebnis;
+    }
+    else{
+
+        for (unsigned int i = 0; i < matrix1.rows; i++){
+            for (unsigned int j = 0; j < matrix1.cols; j++){
+                //Adding Matrix Elements of same row and col index together and store in new Matrix
+                MatrixErgebnis.buffer[i * matrix1.cols + j] = matrix1.buffer[i * matrix1.cols + j] + matrix2.buffer[i * matrix1.cols + j];
+
+                }
+        }
+
+  }
+return MatrixErgebnis;
 }
 
 Matrix multiply(const Matrix matrix1, const Matrix matrix2)
 {
-    if (matrix1.rows == matrix2.cols) {
-        Matrix result;
-	    result.rows = matrix1.rows;
-        result.cols = matrix2.cols;
-
-        result.buffer = malloc(result.rows * result.cols * sizeof(MatrixType));
-
-        for(int i = 0; i < rows; i++) {
-            for(int j = 0; j < cols; j++) {
-                MatrixType value = 0;
-                for(int k = 0; k < matrix1.cols; k++) {
-                    value += matrix1[i][k] * matrix2[k][j];
-                }
-                result.buffer[i][i] = value;
-            }
-        }
-        return result;
-    }
-    printf("Die angegebenen Matrizen haben keine passenden Dimensionen für die Multiplikation");
-    return NULL;
+    
 }
\ No newline at end of file