Tilahun Muche, and Willie Reynolds. “THE DERIVATIVE OF FUNCTIONS AND THE CEILING DETERMINANT OF A SQUARE MATRIX”. IJRDO -JOURNAL OF MATHEMATICS 7, no. 1 (February 5, 2021): 01-16. Accessed December 22, 2024. http://cpcontacts.ijrdo.org/index.php/m/article/view/4078.