GusriansyahGemawati, SriSirait, Asli2013-03-162013-03-162013-03-16Rangga Dwijunanda Putrahttp://repository.unri.ac.id:80/handle/123456789/2616݊ × ݊ (݊ ≥ 5) matrices by reducing their sizes by four, it is known as the Cornice Method. A determinant of matrices with the exception of the first and the last entries, the entries of the 2nd row and (݊ − 1) − ‫ݐ‬h row, as well as the 2nd column and (݊ − 1) − ‫ݐ‬h column are all zero. This called “Cornice Determinants” and note as |‫ܥ‬௡×௡ |(݊ ≥ 5). To obtain the form of this Cornice MaotherDeterminants MatriksLaplace ExpantionInvers MatriksOther