Search found 134 matches

by dlachieze
Fri Sep 28, 2018 8:23 am
Forum: Usage tips, tricks and problem reports
Topic: SUM, MEAN & SDEV don't lift the stack
Replies: 20
Views: 1284

Re: SUM, MEAN & SDEV don't lift the stack

So the only exception from a sensitive stack handling seems to be the HP-29C/19C as reported by Thomas. And the HP-67, 41C, and 42S, which may go back to the HP-65 in this matter. Have to check. The first HP calculator with 2 variables stat functions is the HP-55. On the HP-55 MEAN and SDEV are ove...
by dlachieze
Fri Sep 28, 2018 5:15 am
Forum: Usage tips, tricks and problem reports
Topic: SUM, MEAN & SDEV don't lift the stack
Replies: 20
Views: 1284

Re: SUM, MEAN & SDEV don't lift the stack

On the 32s and the 32sii you recall separately the mean of x and the mean of y, not both at the same time. If you recall the mean just after the last Sigma+, it replaces the content of X (stack lift is disabled after Sigma+), if there is another operation enabling stack lift after the last Sigma+ th...
by dlachieze
Thu Sep 27, 2018 9:30 am
Forum: Usage tips, tricks and problem reports
Topic: SUM, MEAN & SDEV don't lift the stack
Replies: 20
Views: 1284

Re: SUM, MEAN & SDEV don't lift the stack

Does anybody have the necessary machines at hand to check what DIM? and RCLIJ and L.R. do in real life? On the 42s: DIM? replaces the matrix in X by the dimensions (columns & rows) in X & Y, pushing Y content to Z, Z content to T and placing the matrix in L T: t T: z Z: z Z: y Y: y => Y: rows X: Ma...
by dlachieze
Sun Sep 23, 2018 10:38 pm
Forum: Discuss!
Topic: 43S Poll (yes, here is one!)
Replies: 28
Views: 3306

Re: 43S Poll (yes, here is one!)

I choosed the one on the far left: I don't like the two on the right because the light background around the screen makes the yellow and blue marks difficult to see (not enough contrast). It makes also the small black border around the screen area much more visible and any variation in the screen / ...
by dlachieze
Fri Sep 21, 2018 4:30 am
Forum: Usage tips, tricks and problem reports
Topic: Adding elements to matrix programmatically
Replies: 4
Views: 547

Re: Adding elements to matrix programmatically

Is there a way to insert an element into the matrix by using GROW mode without creating a new one afterwards ? Is there a way to first create a new empty matrix element and then insert the new value right into it? I would say no to these two questions, but you can simply add DELR at the end of your...
by dlachieze
Sat Sep 08, 2018 9:05 am
Forum: Usage tips, tricks and problem reports
Topic: Extremum and second derivative
Replies: 2
Views: 399

Re: Extremum and second derivative

It seems to come from the x<>y at step 30. You're recovering the Solver previous estimates and uses as the x solution. As the Free42 Solver implementation is different from the 42s implementation you get a different value. But what you need is what you stored in R00, so as a quick fix just replace s...
by dlachieze
Sat Aug 25, 2018 10:46 am
Forum: DM42
Topic: 3D printed DM42 stand
Replies: 12
Views: 1391

Re: 3D printed DM42 stand

Here are some pictures from an old eB auction : https://nsa39.casimages.com/img/2018/08/25/mini_180825125416477172.jpg https://nsa39.casimages.com/img/2018/08/25/mini_180825125415990766.jpg https://nsa39.casimages.com/img/2018/08/25/mini_180825125359257951.jpg https://nsa39.casimages.com/img/2018/08...
by dlachieze
Wed Aug 15, 2018 8:09 am
Forum: Update Announcements
Topic: UPDATE: DMCP-3.9a / DM42-3.9.1 / dm_tool-2.4
Replies: 21
Views: 2612

Re: UPDATE: DMCP-3.9a / DM42-3.9.1 / dm_tool-2.4

Thanks for the update. This time I tested a new way to update my DM42: directly from my Android tablet ! I downloaded DMCP V3.9a and DM42 V3.9.1 on my tablet, connected the DM42 with a USB OTG cable and activated USB Disk in the Setup menu. The DM42 was recognized as a USB key and I copied to it the...
by dlachieze
Tue Aug 14, 2018 3:14 pm
Forum: OFFIMG library
Topic: What's your current set?
Replies: 0
Views: 729

What's your current set?

Wondering what you ended up with as your preferred set of OFFIMG pictures ...

So here is mine:
CurrentSet.PNG
CurrentSet.PNG (221.59 KiB) Viewed 729 times
Current set.zip
by dlachieze
Fri Jul 13, 2018 8:53 am
Forum: Update Announcements
Topic: DM42 Firmware V3.5 available
Replies: 85
Views: 11404

Re: DM42 Firmware V3.5 available

Hopefully the top post in this thread gets updated with a note about the change. I don't think the first post of this thread will be updated as it is about V3.5 which is the last version before the code split, so nothing to change in the update procedure for this version. Once you have updated from...