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 have a directory containing .csv's named like so: 2015-05-01.csv 2015-05-08.csv 2015-05-15.csv Each .csv contains a set of data points (say, from column 4, where rows 4, 5 and 9 are individual ...

Plot points with coordinates where \(x\) and \(y\) are equal. Three points are sufficient, but more can be plotted. Draw a line through the plotted points. If \(x\) is positive, \(y\) is negative. If ...