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
