Search found 16 matches

by jvanoort
Tue Mar 30, 2021 1:00 pm
Forum: Hardware issues
Topic: Any experience with changing the feet?
Replies: 5
Views: 1488

Re: Any experience with changing the feet?

Here same problem. My 'solution' is to rest the machine on top of its empty case while using...seems to reduce the wobbly feel.
by jvanoort
Fri Mar 19, 2021 7:40 pm
Forum: DM42
Topic: LOG bases
Replies: 18
Views: 2425

Re: LOG bases

That’s not a HP 42s trick, but a gaping gap in my fundamental knowledge and understanding of math in general and LOG / LN in particular!

I’m dedicating tonight to trying understand why LOGb(x) = LN(x)/LN(b), but indeed: no solver required!

Learning something new everyday, thank you guys!
by jvanoort
Thu Mar 18, 2021 10:51 pm
Forum: DM42
Topic: LOG bases
Replies: 18
Views: 2425

Re: LOG bases

Thank you. Interesting solution

I now use the solver and solve b^e=x for the exponent e, which works as well, but I just wondered if there was a trick to use LOG with a different base without resorting to solvers or programs. Apparently not.

Thanks for your reply though!
by jvanoort
Thu Mar 18, 2021 10:17 pm
Forum: DM42
Topic: LOG bases
Replies: 18
Views: 2425

LOG bases

hi all,

This may be more a general HP 42s question, but is there a way to use the LOG function with different bases?
by jvanoort
Fri Mar 12, 2021 12:25 am
Forum: DM42
Topic: Discrepancy between DM42 and Hp 50g
Replies: 2
Views: 1031

Re: Discrepancy between DM42 and Hp 50g

Hi Joe, I did as you suggested and got the same result indeed. Thank you!
by jvanoort
Thu Mar 11, 2021 11:29 pm
Forum: DM42
Topic: Discrepancy between DM42 and Hp 50g
Replies: 2
Views: 1031

Discrepancy between DM42 and Hp 50g

Hi all, I posted this on the HP forum as well, but since it also relates to the DM42 I thought I’d ask here too. I hope you guys don’t mind. Today I calculated the energy flux from the sun using the Stefan Bolzmann equation: EF = sT^4. So as follows: 5777 4 Y^X 5.67E-8 * On my DM42 and WP34s the res...
by jvanoort
Thu Mar 04, 2021 10:02 pm
Forum: Usage tips, tricks and problem reports
Topic: remove program/function from custom menu
Replies: 5
Views: 392

Re: remove program/function from custom menu

Even better!

And thanks for the reference to the 42s doc! For some reason I completely missed it!
by jvanoort
Thu Mar 04, 2021 9:42 pm
Forum: Usage tips, tricks and problem reports
Topic: remove program/function from custom menu
Replies: 5
Views: 392

Re: remove program/function from custom menu

That's a real pragmatic solution! Works for me! :)

Tnx!
by jvanoort
Thu Mar 04, 2021 8:58 pm
Forum: Usage tips, tricks and problem reports
Topic: remove program/function from custom menu
Replies: 5
Views: 392

remove program/function from custom menu

Hello,

I've put a few programs and functions on the custom menu of my DM42. Now I'd like to remove some of them, but I can't seem to find a way.

Is there a way to empty the custom menu or otherwise remove menu items from it?
by jvanoort
Thu Mar 04, 2021 8:53 am
Forum: Hardware issues
Topic: Broken key
Replies: 7
Views: 1461

Re: Broken key

Mea Culpa...my intention for this post though was to ask about the defect itself, while the post in General was specifically about the supposed lack of support.

I'll keep it in mind though.