anal_deriv.m

was the name a researcher gave for a Matlab toolkit. According to her,
"This program computes analytical first and second (if approx=2) derivatives of the function f(yp,y,xp,x) with respect to x, y, xp, and yp."
But I had to think 10000 times before opening the file: at first it sounded quite nasty.
Do you think she has done it on purpose?