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| author | priyanka | 2015-06-24 15:03:17 +0530 |
|---|---|---|
| committer | priyanka | 2015-06-24 15:03:17 +0530 |
| commit | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (patch) | |
| tree | ab291cffc65280e58ac82470ba63fbcca7805165 /845/CH3/EX3.9 | |
| download | Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.gz Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.bz2 Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.zip | |
initial commit / add all books
Diffstat (limited to '845/CH3/EX3.9')
| -rwxr-xr-x | 845/CH3/EX3.9/Ex3_9.sce | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/845/CH3/EX3.9/Ex3_9.sce b/845/CH3/EX3.9/Ex3_9.sce new file mode 100755 index 000000000..c2cb113dd --- /dev/null +++ b/845/CH3/EX3.9/Ex3_9.sce @@ -0,0 +1,26 @@ +//Example 3.9
+clc
+clear
+
+A = [1 1 1; 4 3 -1; 3 5 3];
+n = length (A(1,:));
+Aug = [A,eye(n,n)];
+
+// Forward Elimination
+for j = 1:n-1
+ for i = j+1:n
+ Aug(i,j:2*n) = Aug(i,j:2*n) - Aug(i,j) / Aug(j,j) * Aug(j,j:2*n);
+ end
+end
+
+// Backward Elimination
+for j = n:-1:2
+ Aug(1:j-1,:) = Aug(1:j-1,:) - Aug(1:j-1,j) / Aug(j,j) * Aug(j,:);
+end
+
+// Diagonal Normalization
+for j=1:n
+ Aug(j,:) = Aug(j,:) / Aug(j,j);
+end
+Inv_A = Aug(:,n+1:2*n);
+disp(Inv_A,"Inverse of A (A-1) = ")
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