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Diffstat (limited to '243/CH6/EX6.16/6_16.sce')
-rwxr-xr-x | 243/CH6/EX6.16/6_16.sce | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/243/CH6/EX6.16/6_16.sce b/243/CH6/EX6.16/6_16.sce new file mode 100755 index 000000000..b8aa023e4 --- /dev/null +++ b/243/CH6/EX6.16/6_16.sce @@ -0,0 +1,32 @@ +//Example No. 6_16
+//Quadratic factor of a polynomial using Bairstow's Method
+//Pg No. 187
+clear ; close ; clc ;
+
+a = [ 10 1 0 1];
+n = length(a);
+u = 1.8 ;
+v = -1 ;
+
+b(n) = a(n);
+b(n-1) = a(n-1) + u*b(n);
+c(n) = 0 ;
+c(n-1) = b(n);
+
+for i = n-2:-1:1
+ b(i) = a(i) + u*b(i+1) + v*b(i+2) ;
+ c(i) = b(i+1) + u*c(i+1) + v*c(i+2) ;
+end
+for i = n:-1:1
+ printf('b%i = %f \n',i-1,b(i))
+end
+for i = n:-1:1
+ printf('c%i = %f \n',i-1,b(i))
+end
+
+D = c(2)*c(2) - c(1)*c(3) ;
+du = -1*(b(2)*c(2) - c(1)*c(3))/D ;
+dv = -1*(b(1)*c(2) - b(2)*c(1))/D ;
+u = u + du ;
+v = v + du ;
+printf('\n D = %f \n du = %f \n dv = %f \n u = %f\n v = %f \n',D,du,dv,u,v)
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