At the risk of ...Getting through Calculus II is a pretty strong credential. A few years ago, Calc II was the most-failed math course at UNC-Chapel Hi...

And thank you as well. James Stem, on pages 18 and 19, tells us in an intuitive way that scale factors do not result from linear functions. In figure ...

At the risk of ...It's the coefficient of determination, the percent of variation in data that is explained by a regression equation. Technically, it'...

At the risk of ...belaboring the point, here are the results of some further work with the line from Wilmington to Winston-Salem. First, plot the scal...

Here are the formulas for both Simpson's Rule computations. These give the average scale factor, so dividing Grid Distance by either of these results ...

Certainly, all of those digits are not usable, nor are they useful. On NGS Data Sheets, the fifth decimal place in seconds for lat/lon represents 0.00...

It's definitely overkill and misleading to non-numbers people. We could only speculate as to why so many are displayed. One answer may be that it's ju...

Oops. Correction. You're talking about the 14th decimal place in degrees, not in seconds. For the mean earth, that number is about 3.65 * 10^(-9) feet...

If we use 3959 miles as the mean radius of the earth, 1 second of arc would be about 101 feet. So, the 14th decimal place would be 101 * 10^(-14) = 1....

That's really a neat way to do it. In the past, I've opened KML files in a text editor, used search and delete to strip away the unwanted stuff, saved...

This little piece of free software will do that for you. I overran its capabilities with an SHP file that was more than 30,000 records, but it will ha...

You're absolutely correct. The tangent line we are talking about is not arbitrary. For the Lambert, it is the line tangent at the central parallel of ...

It is a matter of definition. To any point on a surface, we can construct a line tangent to that surface. A line perpendicular to that tangent line at...

I read the example somewhat differently. Note that the difference is from either point to the average of the coordinates of the two points. To me, tha...

Exactly. And the difference between using a 3 in the seventh place instead of a 1 is 0.2 parts per million, or 1 part in 5 million. I've never known t...

Just trying to learn here. The mean of the 13 factors is 0.99986290 and the median is 0.99986230, which, if my rheumy old eyes don't deceive me, is po...

Questions like that turn multiple choice into multiple guess.