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⇤ ← Revision 1 as of 2010-12-16 12:23:31
Size: 516
Comment:
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← Revision 2 as of 2010-12-18 10:58:18 ⇥
Size: 545
Comment: exception of LU decomposition
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| Deletions are marked like this. | Additions are marked like this. |
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| we need to interchange the rows and then perform l*u==a a = matrix([[0,2], [ 3 ,4]]) a.swap_rows(0,1)print a u = matrix([[1,2], [ 0, 2]]) l = matrix([[1,0], [ 3, 1]]) a==l*u output [3 4] [0 2] False |
A=([[0,2],[3,4]]) Z=matrix(2,2) var('x,y') L=matrix([[1,0],[x,1]]) U=matrix([[1,y],[0,1]]) Z=L*U for i in range(2): for j in range (2): Z[i][j]==A[i][j] f = function('f', x) f = L print f(3) g=function('g',y) g=U print g(2) R=f(3)*g(2) print R bool(R==A) |
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| * <Shravan sanghishetty>, <Student>, <vignan> * <karthik.p>, <Student>, <Vignan> * <sridhar.b>,<student>,<Vignan> |
* guna,student,snist *sadhana,student,snist * sai kumar,student,mriet |
Book
Linear Algebra
Author
Gilbert Strang
Edition
A=([[0,2],[3,4]])
Z=matrix(2,2)
var('x,y')
L=matrix([[1,0],[x,1]])
U=matrix([[1,y],[0,1]])
Z=L*U
for i in range(2):
for j in range (2):
Z[i][j]==A[i][j]
f = function('f', x)
f = L
print f(3)
g=function('g',y)
g=U
print g(2)
R=f(3)*g(2)
print R
bool(R==A)
Solution by:
- guna,student,snist
- sadhana,student,snist
- sai kumar,student,mriet