Two columns or rows of data in Microsoft Excel may contain useful information, but you'll just have a set of numbers. You can give spreadsheet viewers a graphical representation of those numbers by ...

If you understand the definition of a mathematical function, a good way to judge it is that any line drawn parallel to the y-axis intersects with the values in the function’s curve only once. The same ...

I've been reviewing a calculus course I took long ago, and have discovered how handy Grapher.app is for visualizing things. One thing I'd like to do is to be able to plot points though, not just ...