Diff for "Strang-6.7-2"

Differences between revisions 1 and 2

Book

Linear Algebra

Author

Gilbert Strang

Edition

code_begins

clf()
theta=linspace(0,2*pi,1000)
x=cos(theta)
y=sin(theta)
hbead=plot(x[1],y[1],'o')
axis([-1,1,-1,1])
for k in range(2,size(theta)):
    plot(x[k],y[k],'o')

code_ends

Solution by:
- <Anvesh>, <Student>, <Student>
- <Your Name>, <Profession>, <Organization>

-  ⇤ ← Revision 1 as of 2010-12-16 11:11:58 → 
  Size: 715
  Editor: anvesh
  Comment:
+   ← Revision 2 as of 2010-12-17 10:41:50 → ⇥
  Size: 426
  Editor: anvesh
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 8:
-A=matrix([[-1,1,2],[3,-1,1],[-1,3,4]])
A_11=det(matrix([[-1,1],[3,4]]))
A_21=det(matrix([[-1,-2],[-3,-4]]))
A_31=det(matrix([[1,2],[-1,1]]))
A_12=det(matrix([[-3,-1],[1,-4]]))
A_22=det(matrix([[-1,2],[-1,4]]))
A_32=det(matrix([[1,-2],[-3,-1]]))
A_13=det(matrix([[3,-1],[-1,3]]))
A_23=det(matrix([[1,-1],[1,-3]]))
A_33=det(matrix([[-1,1],[3,-1]]))
B=matrix([[A_11,A_21,A_31],[A_12,A_22,A_32],[A_13,A_23,A_33]])
D=det(A)
A_inv=B/D
print(A_inv)
+clf()
theta=linspace(0,2*pi,1000)
x=cos(theta)
y=sin(theta)
hbead=plot(x[1],y[1],'o')
axis([-1,1,-1,1])
for k in range(2,size(theta)):
    plot(x[k],y[k],'o')

Book	Linear Algebra
Author	Gilbert Strang
Edition