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Feb
8
awarded  Supporter
Feb
6
awarded  Commentator
Feb
6
comment Fail to understand elementary matrices properties in matrix LU factorization.
thanks for your explanation dear Marc. Honestly I didn't completely get it yet.can you provide me an example please?
Feb
6
revised Fail to understand elementary matrices properties in matrix LU factorization.
edited tags
Feb
6
asked Fail to understand elementary matrices properties in matrix LU factorization.
Jan
5
asked problem with derivation of PCA as minimizer of MSE
Jan
3
accepted Why Sum square of each pair of a group of numbers is N factor of sum squares of its elements difference from mean?
Jan
2
asked Why Sum square of each pair of a group of numbers is N factor of sum squares of its elements difference from mean?
Nov
23
comment Problem with with derivative of integral
I think this question is just about derivation of an integral on a variable.
Nov
23
comment Problem with with derivative of integral
we define z=xy . z is new R.V
Nov
23
awarded  Editor
Nov
23
revised Problem with with derivative of integral
deleted 9 characters in body
Nov
23
comment Problem with with derivative of integral
'f' is probability density function and 'F' is cumulative distribution function.although I think it is not helping to know about F and f in order to solve the above formulation.
Nov
23
asked Problem with with derivative of integral
Dec
13
awarded  Tumbleweed
Nov
25
answered has deleting node in a binary search tree Displacement feature?
Nov
25
comment has deleting node in a binary search tree Displacement feature?
deleting means that for example detele('4') removes node with key 4 from our tree.
Nov
25
comment has deleting node in a binary search tree Displacement feature?
a simple binary search tree keys in all nodes(include leaves).being balance is not required.
Nov
25
asked has deleting node in a binary search tree Displacement feature?
Oct
18
awarded  Student