I believe he means to separate the + and - terms that don't reside inside brackets.  So the extracted piece you show would look like this

-3/32*e*cosfJ^2*sinfK^2*sindincl^2*cos(2*ele-2*g-anom)
-3/32*e*cosfJ^2*sinfK^2*sindincl^2*cos(2*ele-2*g+anom)
+3/16*e*cosfJ^2*sinfK^2*sindincl^2*cos(-anom+

It's all relative.  Ironic how relativity crept in.  Lanczos' Ph.D. thesis  (1921) was on relativity theory.  He even served as an assistant to Albert Einstein. 

In fact it might interest you that Cornelius Lanczos pioneered work on the Fast Fourier Transform which is an important tool used in Financial Economics :)

They work fine in M12. 

I can only conclude that either the equations weren't exactly as shown or there were some prior interfering calculations. 

@dot4xdash - if you use restart; and then try it again do you get the same results?

Ah, okay fair enough on the comments. 

I do like seeing all the bugs and their workarounds though.

Of course the regression is easily corrected, no mountain.  May I ask what is wrong with my contributions?

**edit deleted irrelavent content

Actually there is no need to change the variable it does work with x on 16.02.  You just need to adjust the x range to -4..2

So it appears you can't just arbitrarily pick a range (which should work) but you must have a range of x that is suitable.  The x range is dependent on the y range chosen and vice versa.

DEplot(diff(y(x), x) = x+y(x), y(x), x = -4 .. 2, y(x) = -5 .. 5, [[0, 0]], linecolor = black)

However using the x range -5..5 will not produce the solution curve unless you increase your y range to something like y=-5..130

Changing the the function y to y(t) instead works

Also note if your y range is not large enough for the solution it will not display so either remove the y range or choose a suitable larger range that will allow the solution to be visible.  If you want the smaller y range the x sorry t range will have to be smaller. 

So changing to this will help

A:=DEplot(y'(t)=t+y(t),y(t),t=-5..5,[[0,0]],linecolor=black);

display(A)

Very enlightening.  Thank you for that link!

I would also like to add this interview with Richard Feynman - The pleasure of finding things out

Well the issue was there since primes 2, but not everyone announces they see all the trees in the forest.

An application of this would be to find solutions for the game Boggle.

ref this answer answered at 10:06.  The original question says posted 1 minute ago. 

Time travel is alive and well here on mapleprimes.  We can answer questions before they are even asked.

This answer posted at 9:27

It appears the answered values after 1 hour go back to minutes

This answer is exactly around 9:20

He is the first person I have seen to actually have filled out the document properties section.

He is the first person I have seen to actually have filled out the document properties section.