Recent content by Tegewaldt

Hello fellow PF'ers! I have been conversating with a strongly religious character for some time now, and thought i'd present some of his arguments to you. I have myself tried to explain the basics of the problems, but maybe some of you can have a laugh and go into further details as to why he...

i'ts not a surface, it's a parametric curve. 3 independent functions, one for each dimension.

Hi PF/math ! I've been searching for a program which will draw 3d parametric curves accurately for large variables, eg. f(10^8). Ive tried www.math.uri.edu and Ti-Nspire (the latter may or may not have a setting for the accuracy), but both tend to turn what should've been a smooth curve into an...

The intended purpose of such a funktion is to predict lunar phenomena as accurately as possible, so the above shouldn't be a problem, but I realize that the "visual result" May not be very interesting.

Would this method work for the aforementioned example with the moon orbiting the Earth while orbiting the sun (the latter considered a fixed point)? -Thank you for the detailed explanation by the way, very helpful indeed!

What would such an iterative approach look like? So far I've tried Kepler II to define the area swept over by a line from the sun to the Earth during orbit. By using this argument to solve the radius as a function of time, a numerical approach returns values varying slightly from the expected...

Hi PF I've beent rying to model the lunar orbit around the sun (cardioide) as a parametric function, but have run into a problem. f(t) = r(t) : x = a cos(ωt) y = b sin(ωt) z = k t The angular frequency ω as well as the distance from to the center varies around the orbit. Is...