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+//Example 3.10
+clc
+clear
+
+A = [1 1 1; 4 3 -1; 3 5 3];
+n = length (A(1,:));
+Aug = [A,eye(n,n)];
+
+N = 1:n;
+for i = 1:n
+    dummy1 = N;
+    dummy1(i) = [];
+    index(i,:) = dummy1;
+end
+
+// Forward Elimination
+for j = 1:n
+    [dummy2,t] = max(abs(Aug(j:n,j)));
+    lrow = t+j-1;
+    Aug([j,lrow],:) = Aug([lrow,j],:);
+    Aug(j,:) = Aug(j,:) / Aug(j,j);
+    for i = index(j,:)
+        Aug(i,:) = Aug(i,:) - Aug(i,j) / Aug(j,j) * Aug(j,:);
+    end
+end
+Inv_A = Aug(:,n+1:2*n);
+disp(Inv_A,"Inverse of A (A-1) = ")