Hello, I only palyed with MapleSim a few years ago, so can't answer your specific question. Try this link.

https://www.youtube.com/c/maplesoft/playlists  There are several series on MapleSim.

Hope this helps.

@janhardo with the abs in the Maple equation the answer came out negative. I dont know how abs reacts in the fsolve command.

I notice your arctan functions have Pi/90. Have you set GE to working degrees? Radians are better for for general problem solving. That is throwing your equation for solving in Maple.

@janhardo Thanks for that. I checked it out. All I had to do was remove the absolute value from the Area equation after pasting it into Maple.

Download GE_Circle_puzzle.mw

Hello,

A bit of a side line question here. I got a copy of GE the other day as it is on special offer .How did you make the overlapping area of the circles?

These links might be of use to you.

http://www.peterstone.name/Maplepgs/maple_index.html

http://paws.kettering.edu/~ktebeest/maple/

https://www.12000.org/my_notes/faq/MAPLE/maple.htm#_Toc289615797

@Jonas F 

Read this from 2015. @ecterrab  would know if further developments have been implimented along this line.

https://www.mapleprimes.com/questions/205246-How-To-Use-Matrix-Symbol-Directly-In

@vv Thank you. I was not aware of msolve.

@Carl Love Originally I didn't think there would be so many solutions. So that idea went in the bin. Your line of code could will work really well.

@Kitonum Thank you. I didnt realise there would be 4000 solutions. 

 Something similar happened  around the start of the year. I suggested then that if a member with some level of status reples the OP should not be allowed without permission to delete the question.

https://www.mapleprimes.com/questions/226210-Disappearing-Questions#comment255592

@acer This is just an example for the question. I picked an arbitrary way of making large numbers and then extracting the data I want. I did try  a billion elements:- no hope ran all night on part 1 of your code. I have been wondering about what one would do with larger arrays. But that is not the immediate concern. It would be interesting to see how this runs on a a processor with say 16+ physical cores expecially a Ryzen.

@acer  I am using an I7-7700 4.8Ghz 64G ram on Win10. Maple 2019.0. For some reason I can't upload the maple files so it is pdfs.

I am aware of the timing variations you mentioned.

threadthingm_10million.pdf

threadthingm_100million.pdf

I like Threads:-Seq because it is simple for me to understand.

@tomleslie Sorry for the delay in replying to you.

Attached is a pdf of the worksheet run for 100million. 430secs parallel.!!!!

Lately I cant seem to upload maple documents. Just get a failed message.

speedUP4-1.pdf

@tomleslie @acer. I don't think I wil have time to test tonight. Will test these tomorrow night or Friday night and report back.