Page 32 - Basics of MATLAB and Beyond

v =
1
1
2
2
>> v*u
ans =
1 2 0 1
1 2 0 1
2 4 0 2
2 4 0 2
>> u*v
ans =
5
The matrix inverse can be found with the inv command:

>> a = pascal(3)
a =
1 1 1
1 2 3
1 3 6
>> inv(a)
ans =
3 -3 1
-3 5 -2
1 -2 1
>> a*inv(a)
ans =
1 0 0
0 1 0
0 0 1
To multiply the elements of two matrices use the .* operator:

>>a=[12;3 4]
a =
1 2
3 4
>>b=[23;0 1]
b =
2 3
0 1
>> a.*b
ans =
2 6
0 4

c 2000 by CRC Press LLC