Search found 10 matches

by fridlmue
Wed Feb 19, 2020 2:38 pm
Forum: Software Library
Topic: Matrix Viewer
Replies: 11
Views: 470

Re: Matrix Viewer

Bill (Smithville NJ) wrote:
Wed Feb 19, 2020 1:52 pm
What else should I try?
Update your DM42 to the in just published "release candidate" version 3.17, then it will work. I had the same problem before that.
by fridlmue
Wed Feb 19, 2020 8:22 am
Forum: Software Library
Topic: Matrix Viewer
Replies: 11
Views: 470

Re: Matrix Viewer

Wow, great! I waited for something like this :geek:
by fridlmue
Sat Jan 04, 2020 5:36 pm
Forum: Discuss!
Topic: Calculate closest fraction or sqrt...
Replies: 3
Views: 211

Re: Calculate closest fraction or sqrt...

Ah, yes, you are right! If I go to more digits it becomes better. Is it possible to change that behavior?
by fridlmue
Sat Jan 04, 2020 11:44 am
Forum: Discuss!
Topic: Calculate closest fraction or sqrt...
Replies: 3
Views: 211

Calculate closest fraction or sqrt...

Hi there, when i was searching on a program to calculate somehow close fractions or, even better, show a close pi or sqrt value i found this program: https://www.hpmuseum.org/software/qpi/42sqpi.htm Now I'm curious if the behavior on the DM42 is different then on the HP42s. Because I do net get e.g....
by fridlmue
Thu Dec 12, 2019 9:46 pm
Forum: DM42
Topic: calculate values of Z-table with DM42
Replies: 9
Views: 435

Re: calculate values of Z-table with DM42

With a centered and reduced distribution, it is not wise to use infinity as lower limit. For x <0 the probability is (0.5 - integral from x to 0). For x> 0 the probability is (0.5 + integral from 0 to x). Pierre If i think about it, this makes fully sense. Thank you for this second very valuable hi...
by fridlmue
Thu Dec 12, 2019 2:14 pm
Forum: DM42
Topic: calculate values of Z-table with DM42
Replies: 9
Views: 435

Re: calculate values of Z-table with DM42

My second question is: What do I insert, if I want to integrate from -∞. Do i just use a very, very big negative number instead of -∞? Basically, yes. The 42S "Programming Examples and Techniques" manual discusses this exact topic on p.127; I'd suggest reading that as there is some explanation and ...
by fridlmue
Thu Dec 12, 2019 2:02 pm
Forum: DM42
Topic: calculate values of Z-table with DM42
Replies: 9
Views: 435

Re: calculate values of Z-table with DM42

Coyotte wrote:
Thu Dec 12, 2019 1:50 pm
Hello,

I'm far from being a specialist of the subject but just with a developper point of view, I do not see the Square Root appear in your program.
(But maybe is it normal...)

Regards,

Coyotte
Oh, men, you are so right! That was the Issue :lol:
Thanks!
by fridlmue
Thu Dec 12, 2019 1:26 pm
Forum: DM42
Topic: calculate values of Z-table with DM42
Replies: 9
Views: 435

Re: calculate values of Z-table with DM42

So I wrote the following program representing the formula: 01 LBL "SND" 02 MVAR "z" 03 RCL "z" 04 x^2 05 +/- 06 0.5 07 x 08 e^x 09 2 10 ENTER 11 PI 12 x 13 SQRT 14 / Now I try to integrate this for the variable z from LLIM = -1 to ULIM = 1 with different accuracy. Shouldn't that return ~0.682 (68,2%...
by fridlmue
Wed Dec 11, 2019 5:21 pm
Forum: DM42
Topic: calculate values of Z-table with DM42
Replies: 9
Views: 435

Re: calculate values of Z-table with DM42

Ok, I'll try that! Thanks!
by fridlmue
Tue Dec 10, 2019 9:50 pm
Forum: DM42
Topic: calculate values of Z-table with DM42
Replies: 9
Views: 435

calculate values of Z-table with DM42

Hi there, as I'm not a native speaker probably there is already the solution for my question in the forums but I'm not able to find it because I search for the wrong terms. I'm a happy new owner of a DM42 and now I'm searching for a solution to calculate the "values of the Z-table" with the calculat...