From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001
From: priyanka
Date: Wed, 24 Jun 2015 15:03:17 +0530
Subject: initial commit / add all books

---
 3293/CH5/EX5.8/Ex5_8.sce | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100755 3293/CH5/EX5.8/Ex5_8.sce

(limited to '3293/CH5/EX5.8/Ex5_8.sce')

diff --git a/3293/CH5/EX5.8/Ex5_8.sce b/3293/CH5/EX5.8/Ex5_8.sce
new file mode 100755
index 000000000..09f3ae417
--- /dev/null
+++ b/3293/CH5/EX5.8/Ex5_8.sce
@@ -0,0 +1,17 @@
+//page 161
+//Example 5.8
+clc;
+clear;
+close;
+A = [1 2;3 4];
+disp(A,'A = ');
+d = det(A);
+disp(d,'det A = ','Determinant of A is:');
+ad = (det(A) * eye(2,2)) / A;
+disp(ad,'adj A = ','Adjoint of A is:');
+disp('Thus, A is not invertible as a matrix over the ring of integers.');
+disp('But, A can be regarded as a matrix over field of rational numbers.');
+in = inv(A);
+//The A inverse matrix given in book has a wrong entry of 1/2. It should be -1/2.
+disp(in,'inv(A) = ','Then, A is invertible and Inverse of A is:');
+//end
-- 
cgit