I am referring to this comment, which states:
And @santiago I know that it is on me to think about it but what to do when I'm not even able to understand where to start ? KlausWarzecha gave me the answer. So even if you close the question i dont care as i know the answer now.
Which basically is the "I got what I want, so I don't care about your rules" petulant attitude that the true homework vampire exhibits.
I believe that this is a major reason why we should not help any homework questions until they show some effort first. It does not help the student to 'spoon feed' answers.