https://en.wikipedia.org/wiki/Fixed_point_(mathematics) search for cosine.
(It is, of course, unimportant, but I think I know what I was thinking about—continued fractions, and what do people even do when the fraction has functions, not numbers, for terms.)
Thank you. We definitely had to learn about attractors in college, this is familiar...
https://en.wikipedia.org/wiki/Fixed_point_(mathematics) search for cosine.
(It is, of course, unimportant, but I think I know what I was thinking about—continued fractions, and what do people even do when the fraction has functions, not numbers, for terms.)
Thank you. We definitely had to learn about attractors in college, this is familiar...