I am writing a program with about 10 internal loops, and its not returning any results, but the counter is still running, I tried to simplify it, still running while I am typing at this moment.

Could you possibly upload the Mathcad 15 version of the Root Newton file you have posted a picture of - and perhaps you could explain to me how you put the squiggly = sign (the approximate sign) - in the program loop - since I thought you could only use Boolean operators in the programming?

Your foot note below the picture explains why I couldn't see this in Mathcad 15

I haven't moved onto Mathcad Prime yet.

Thats a misunderstanding - its not Prime. On contrary, the whole trick works in Mathcad 15 (and below) only, as Prime is too much limited - there is no choice for infix function evaluation available there AFAIK.

The approximate sign is simply the name of a user defined function which is then used the infix way - you can copy and paste that character from anywhere. One way to do it without any external character map is to go to Help/Quicksheets/ExtraMathSymbols and copy it from there. Everytime you use that newly created function you will have to do some kind of copy and paste action again.

Thanks for showing me something else I didn't know about Mathcad. It would be good if some of you Mathcad experts got together to write a book on the things you just don't see in Mathcad books or on the Mathcad training courses.

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