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

---
 1670/CH6/EX6.8/6_8.sce | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100755 1670/CH6/EX6.8/6_8.sce

(limited to '1670/CH6/EX6.8')

diff --git a/1670/CH6/EX6.8/6_8.sce b/1670/CH6/EX6.8/6_8.sce
new file mode 100755
index 000000000..47d53fb8c
--- /dev/null
+++ b/1670/CH6/EX6.8/6_8.sce
@@ -0,0 +1,32 @@
+//Example 6.8
+//Parabola Best Fit
+//Page no. 223
+clc;close;clear;
+
+x=[0.78,1.56,2.34,3.12,3.81]
+y=[2.5,1.2,1.12,2.25,4.28]
+n=1;
+for i=1:5
+    x(i)=(x(i)-2.34)/0.78
+end
+printf('\t\t 2\t 3\t 4\t\t\t 2\n n\tX\tX\tX\tX\ty\tXy\tX y\n----------------------------------------------------------------\n')
+x1=0;x2=0;x3=0;x4=0;x5=0;x6=0;x7=0;x8=0;
+for i=1:5
+    printf(' %.2g\t%.2g\t%.2g\t%.2g\t%.2g\t%.2g\t%.2g\t%.2g\n',n,x(i),x(i)^2,x(i)^3,x(i)^4,y(i),y(i)*x(i),x(i)^2*y(i))
+    x1=x1+n;
+    x2=x2+x(i);
+    x3=x3+x(i)^2;
+    x4=x4+x(i)^3;
+    x5=x5+x(i)^4;
+    x6=x6+y(i);
+    x7=x7+y(i)*x(i);
+    x8=x8+x(i)^2*y(i)
+end
+printf('----------------------------------------------------------------\n %.2f\t%.2f\t%.2f\t%.2f\t%.2f\t%.2f\t%.2f\t%.2f\n',x1,x2,x3,x4,x5,x6,x7,x8)
+A=[x1,x2,x3;x2,x3,x4;x3,x4,x5]
+B=[x6;x7;x8]
+C=inv(A)*B;
+disp(C)
+x=poly(0,'X')
+y=C(1)+C(2)*x+C(3)*x^2
+disp(y,'y =')
\ No newline at end of file
-- 
cgit