1 files changed, 13 insertions, 0 deletions
diff --git a/1673/CH9/EX9.4/9_4.sce b/1673/CH9/EX9.4/9_4.sce
new file mode 100755
index 000000000..989e9cde8
--- /dev/null
+++ b/1673/CH9/EX9.4/9_4.sce
@@ -0,0 +1,13 @@
+//poisson equation
+//exaample 9.4
+//page 354
+clc;clear;close;
+u2=0;u4=0;
+printf('  u1\t    u2\t   u3\t   u4\t\n\n');
+for i=1:6
+    u1=u2/2+30;
+    u2=(u1+u4+150)/4;
+    u4=u2/2+45;
+    printf(' %0.2f\t   %0.2f\t   %0.2f\t   %0.2f\n',u1,u2,u2,u4);
+end
+printf(' from last two iterates we conclude u1=67   u2=75   u3=75   u4=83\n')
+\ No newline at end of file