when you say to write "why you get questions wrong," what does that mean?

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For ex: "I confused wave speed with transverse wave speed. Wave speed depends on the medium and is constant for any given medium. Transverse wave speed is a fn v = y'(x,t), NOT a constant."

Usually, I just identify why I got the Q wrong- did I misread the Q? Confuse 2 concepts? Misunderstand the experiment in the passage? Also, I make sure to elaborate on the correct concept/reasoning/formula needed to solve the problem.

But, really, it's however you want to do it. This way works for me.
 
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