ocr: 1 2 31 The matrix 4 - 812 has no inverse. 5 1 - 8 R2--4R1 - + R2 1231 0 0 4812 4 010 0 -4-8-12-4 00 5 - 1 a 8 L - 0 1 4 - 8 - 12010 J 00-410 0 1 - 23 100 - I 18 10 I - 5 - J 01 The row of zeros on the left side indicates this matrix does not have an inverse. A Noninvertible Matrix