>>
>>
>> a = 'okay'

a =

okay

>> x = rand(3)    % a matrix

x =

    0.8147    0.9134    0.2785
    0.9058    0.6324    0.5469
    0.1270    0.0975    0.9575

>> 1/0

ans =

   Inf

>> foo
??? Undefined function or variable 'foo'.

>>
>>
>> {cos(2*pi), 'testing'}

ans =

    [1]    'testing'

>>
>>
>>