To make more sense on Y axis, plot (; 1-sin +&*: cos) steps 0 2p1 400
It's within the magnitude of the error of representation. --- Cliff Reiter <[EMAIL PROTECTED]> wrote: > This reminds me of the fun to be had plotting sin +&*: cos, > which mathematically is a horizontal line, but numerically... > Try it: > > load 'plot' > plot (; sin +&*: cos) steps 0 2p1 400 > > Years ago, so long ago there was no plot script in J, I had > a student doing a final project in J where he was to create > something like plot; it was supposed to automatically scale > the vertical coordinate, add grid and mark suitable > points along the x and y axis. The student missed classes > missed every deadline to hand in homework and ultimately > came to me after Christmas hoping I would accept his > work (he needed the class in order to graduate in Dec). > I was so mad at his missed deadlines that I just told him > I had no time to deal with grading a semesters worth > of homework handed in weeks after the semseter was over, but > he could show me his final project. He plotted sin, > I asked him to plot sin +&*: cos, > his program did what plot does. I looked at him and > asked what that was; he was dumbfounded, I physically > grabbed his shoulders and pushed him out of the room. > I passed him, but he had to wait a few days to find that > out, and his homework had some brilliant J gems too... > > Cliff, the mean math teacher > > Roger Hui wrote: > > It is false that (sin +&*: cos) y not equal to 1 > > implies that sin y or cos y or both are wrong. > > > > -- > Clifford A. Reiter > Mathematics Department, Lafayette College > Easton, PA 18042 USA, 610-330-5277 > http://www.lafayette.edu/~reiterc > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
