Might be a good idea to change the test suite to "assert(isequal(cube3(),cube3().^3))" so that the answer isn't revealed by looking at the test suite.
Michael C. had a good point, but you also need "assert(numel(unique(cube3()))==3)"
Yo may need to check for length 3
Add a test to assert that length == 3.
It would be a good idea to check that a length 3 vector is returned.
Back to basics 14 - Keywords
Back to basics 21 - Matrix replicating
Create a Multiplication table matrix...
The sum of the numbers in the vector
Is it an Armstrong number?
kmph to mps
Given area find sides
Who invented zero?
find radius of cone
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