topic Minerr function not working on Mathcad Prime 8.0. Please advise in Mathcad

Minerr function not working on Mathcad Prime 8.0. Please advise

gatlas — Mon, 20 Jun 2022 09:21:20 GMT

Team,

I'm trying to do some curve fitting with the minerr function but it's not working. Any advice?

The LambertW function routine is working with other Mathcad Prime 8.0 workbooks.

Thanks,

Dr. Atlas

Re: Minerr function not working on Mathcad Prime 8.0. Please advise

LucMeekes — Mon, 20 Jun 2022 10:16:14 GMT

You've got a malformed solve block. There's a definition of C behind it.

Move the solve block to the side, then you'll see that the

Definition is not part of it.

Delete that definition and retype it inside the 'Guess Values' part of the solve block. Then it should calculate with as result:

Success!
Luc

Re: Minerr function not working on Mathcad Prime 8.0. Please advise

Werner_E — Mon, 20 Jun 2022 11:38:48 GMT

As Luc already wrote, your guess value for C is not inside the solve block (even if it looks that way) but behind.

This happens if you try to drag a region from outside into a solve block - it does not work. The same is true for trying to drag a region from inside a solve block to outside - it will snap back. A quite silly behaviour IMHO.

But Copy/Cut & Paste does work, so you may highlight the region "C:=10^-10", press Ctrl-X and then Ctrl-V.

When I do so, I get a different result (C1=3,667*10^-10) from the solve block compared to the one Luc has given.

Re: Minerr function not working on Mathcad Prime 8.0. Please advise

LucMeekes — Mon, 20 Jun 2022 11:42:54 GMT

"When I do so, I get a different result (C1=3,667*10^-10) from the solve block compared to the one Luc has given."

My mistake (don't know where though), but on repeat I get the same:

Luc

Re: Minerr function not working on Mathcad Prime 8.0. Please advise

gatlas — Mon, 20 Jun 2022 12:32:19 GMT

Thanks!

I got this result as well.

Re: Minerr function not working on Mathcad Prime 8.0. Please advise

gatlas — Mon, 20 Jun 2022 15:41:34 GMT

This is the same answer that I got. Thanks!