MATRIX Flashcards
1
Q
Unit or identity matrix
A
Diagonally 1
2
Q
Addition of matrix
A
A+B=[aij+bij]
3
Q
Subtraction of matrix
A
A-B=[aij-bij]
4
Q
If A mxn Bpxq then
A
AB mxq
5
Q
Matrix multiplication is not __________.
A
Commutative
6
Q
Matrix addition is ___________^^
A
Commutative
7
Q
Matrix multiplication is ____________
A
Associative
8
Q
Matrix transpose is
A
Interchanging rows with columns
9
Q
Symmetric matrix is
A
Aij=aji
10
Q
Skew symmetric matrix
A
Aij=-aji
11
Q
In skew symmetric matrix
A
Diagonal elements are zero
12
Q
A+AT=
A
Symmetric matrix
13
Q
A-AT=
A
Skew sym.
14
Q
To verify AT
A
A=1/2[(A+AT)+(A-AT)]
15
Q
(A+B)T=
A
AT+BT
