One phantom part of the curve

[ValeryOchkov]

My students (Занятие 2. Анимация двери автобуса) have animated a bus door.

See please the video and the attach.

Video Link : 6372

But what is this part of the trajectory of the point 3?

[AlanStevens · Accepted solution]

You have plotted xx.3(alpha.o1) and yy.3(alpha.o1) instead of xx.3(alpha.01) and yy.3(alpha.01)  i.e. You've used lower case o instead of the number 0.  If you correct this you get rid of the phantom part of the plot.

However, since alpha.o1 isn't defined anywhere in the worksheet as far as I can see, I'm puzzled as to why Mathcad plots anything at all here!!!

Alan

[ValeryOchkov]

Thanks!

Where is the old good times with O and Ø?

[ValeryOchkov]

One dangerously close: