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

---
 1332/CH8/EX8.6/8_6.sce | 57 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100755 1332/CH8/EX8.6/8_6.sce

(limited to '1332/CH8/EX8.6/8_6.sce')

diff --git a/1332/CH8/EX8.6/8_6.sce b/1332/CH8/EX8.6/8_6.sce
new file mode 100755
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--- /dev/null
+++ b/1332/CH8/EX8.6/8_6.sce
@@ -0,0 +1,57 @@
+//Example 8.6
+//Block Jacobi Method
+//Page no. 281
+clc;clear;close;
+
+A=[10,1,0,0,0,-1;1,10,1,0,0,0;2,0,20,1,0,0;0,0,1,10,-1,0;0,3,0,0,30,3;0,0,0,2,-2,20];        //equation matrix
+B=[5;10;10;0;0;5]                     //solution matrix
+disp(B,'B=',A,'A=')
+for i=1:3
+    for j=1:3
+        A11(i,j)=A(i,j);
+    end
+    B1(i,1)=B(i,1);
+end
+for i=1:3
+    for j=1:3
+        A12(i,j)=A(i,j+3);
+    end
+end
+for i=1:3
+    for j=1:3
+        A21(i,j)=A(i+3,j);
+    end
+end
+for i=1:3
+    for j=1:3
+        A22(i,j)=A(i+3,j+3);
+    end
+    B2(i,1)=B(i+3,1);
+end
+disp(B2,'B2=',B1,'B1=',A22,'A22=',A21,'A21=',A12,'A12=',A11,'A11=');
+A11_1=inv(A11);A22_1=inv(A22);
+disp(A22_1,'Inverse of A22=',A11_1,'Inverse of A11=')
+for i=1:3
+    X1(i,1)=0;
+    X2(i,1)=0;
+end
+for r=1:2
+    X11=A11_1*(-1*A12*X2+B1);
+    X22=A22_1*(-1*A21*X1+B2);
+    X1=X11;
+    X2=X22;
+    disp(X1,'X1=')
+    disp(X2,'X2=')
+end
+for i=1:6
+    if(i<4)
+        X(i,1)=X1(i,1);
+    else
+        X(i,1)=X2(i-3,1);
+    end
+end    
+disp(X,'X=')
+printf('\n\n\nNote : There is a computation error in calculation of X1(2)')
+    
+        
+    
-- 
cgit