Mathematica Tips: Controlling Accuracy And Precision Using N[ ]

Although the equations in every textbooks are mostly exact and in closed form, we all know that measurement errors actually play a vital part in practical situations. During the course "Electric Instruments And Measurement" this semester, I learned that even with some highly-optimized electric devices, the results of measurement are still questionable if the devices are operated under "wrong" conditions. And that's why the difference between "Accuracy" and "Precision" does matter.

2 New Catagories For Mathematica:Tips&Fun"s"

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Although I've been using Mathematica for about 5 years now, as I mentioned in my previous post, not until recently(Uh..actually, at the beginning of this semester) did I discovered and started to realize the potential of Mathematica.  So I think I perfectly fit into the "newbie" categories.