Page 35 - MATLAB an introduction with applications
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20 ——— MATLAB: An Introduction with Applications
Example E1.1: Consider the two matrices:
1 0 1 7 4 2
A = 2 3 4 and B = 3 5 6
−1 6 7 −1 2 1
Using MATLAB, determine the following:
(a) A + B
(b) AB
(c) A 2
(d) A T
(e) B –1
T T
(f ) B A
2
2
(g) A + B – AB
(h) determinant of A, determinant of B and determinant of AB.
Solution:
>> A = [1 0 1; 2 3 4; –1 6 7]
A =
1 0 1
2 3 4
–1 6 7
>> B = [7 4 2; 3 5 6; –1 2 1]
B =
7 4 2
3 5 6
–1 2 1
(a) >> C = A + B
C =
8 4 3
5 8 10
–2 8 8
(b) >> D = A*B
D =
6 6 3
19 31 26
4 40 41
(c) >> E = A^2 = A 2
E =
0 6 8
4 33 42
4 60 72
F:\Final Book\Sanjay\IIIrd Printout\Dt. 10-03-09
