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Jan6-10, 12:50 PM
HW Helper
P: 1,371
Memorization of formulae won't get you far. You've had several very good explanations about why this relationship holds - and I submitted an explanation as well. Understanding the reasons things work as they do is entirely different than memorizing results, and without understanding you run the risk of applying results when they shouldn't be.

In short, sometimes 'understanding' requires some work on your part.