Machine Learning: Week 2 quiz on Octave

I am trying to pass Week 2 Octave Quiz and keep failing. Is this just me? Very difficult to see if there is a . or ‘ in the answer option. Not all material asked is covered in the Week 2 lecture on Octave (e.g. the difference of X*Y vs. X.*Y. Most conversation was about X.*Y. I read the Octave manual and answered accordingly but got a wrong answer. Most problematic questions are #3 and #5


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