Mathcad

I have hundreds of MathCad 13 files and I can't start MathCad from one hour to the next. Is it possible that this data is lost forever? That would be a disaster for me. Please help me!   Translated by the Community Moderation using Google Translate     Ich habe Hunderte von MathCad-13-Dateien und kann MathCad von einer Stunde auf die andere nicht mehr starten.- Soll es möglich sein, dass diese Daten für immer verloren sind? Das wäre für mich eine Katastrophe. Bitte helfen Sie mir!

to all Doing a sanity check on the CFFT for another spectrum analyser in a 1/3 party toolIf one has a sine wave Asin(w*t) then a spectrum analysis will return an amplitude a=A/2 at w (or f= 2piw) . Am I correct?Therefore if one only has the spectrum as an output (and not the original time signal) then one can read the frequency (w or f ) and conclude that the sine wave at the freq (in the time signal )has a peak value 2a! Thanks in advanceJohn

I'm trying to get a programmed text output from testing if a point is inside a circle.  All of the points are either secondary ohms or degrees.  The chuck of programming seems to fail if there are units attached to the numbers.  See Below.   

Hi everybody,I have calculation sheets that utilize a reference to a different sheet that contains subroutines to calculate coefficients, factors etc. for the main sheet.In Mathcad 15 this works just fine, in Mathcad Prime 9 however, an error message (see attached image) is returned by Prime, claiming that there are errors in the calculation sheet.Has anybody figured out how to find these errors? When I open the Prime sheet no indication is given that points to the error. As I said, the sheet works in Mathcad 15, so I assume that the calculation is ok.Any ideas?Raiko   

I had a circle function that was working fine until I re-defined some of the variables as Ohms-secondary.  The plot is blowing up now and I'm not sure why.  See attached.  

I am having trouble with the onefn function in Mathcad 15. I get double entries in the 1/f noise vector and if I take the CFFT(ofn) I get a zero as the first result. Also I do not understand the mirrored magnitude plot of the 1/f Noise. I also don’t understand why the range variable even starts at zero. That would give infinity for 1/f. See attached.BillBill Dumke, RF EngineerNsight Telservices dba Cellcom450 Security BlvdGreen Bay, WI 54313

Hello, @ttokoro  How to plot arrow lines like below in 2D and 3D:      

Hello everyone,I have something to ask, and maybe it's quite easy to ask. But I couldn't find any source about it. I created a chart from curve fitting, and I want to see the chart values in a table. If it's necessary, I can add the file. 🙂  

Hello everyone 🙂 I want to do exponential regression, I saw a YouTube source about it. Link https://www.youtube.com/watch?v=O0LbLATVboU&t=320s. However, I face some errors when I want to choose some value in a matrix. The error shown in the figure below pops up. Error: This array index is invalid. The index must be an integer, not less than ORIGIN, and not greater then the last element. Can you help me?  Note: I attached the Mathcad and Excel files.    

Hello Everyone.From :   How to plot an Arc in 3D with Mathcad 15 ?Thanks in advance for your time and help.Best Regards.Loi.

This should be simple.  I have an issue where I define an equation and get a useful result.  But further down in the mathcad sheet I just need to echo the equation that defines the variable to the user so he can make other determinations from the equation.  How do I do that?  See attached. I need the means to do this in Mathcad 15 and in Prime 8.0.     

How can I plot a circle in the X-Y plane, only knowing the radius and location of the circle center?I have Mathcad Prime 8.0. 

Hello, I can't get the two terms to add up. i can get the results individually. Attached is Mathcad 15 sheet. Thanks    

Is there anyway to display the result?  I'm using ptc mathcad prime 7.0.0.0

I spent a fair portion of my career taking measurements of experimental data.  When I first started the senior engineer would review the data and discard measurements that he deemed false.  Discarding data simply because you thought it was wrong struck me as very questionable and I spent a fair amount of effort developing a method (using T statistics) to identify "bad" data.   It turns out that there is a statistically rigorous calculation to do just that, developed (and published in 1852) by Benjamin Peirce.  That method is developed and demonstrated in the attached Prime 4 Express file.   Thoughts and suggestions?

Estou encontrando problemas para abertura do Mathcad. Estava usando normalmente, mas de repente o programa começa a carregar e não abre. Já reinstalei e continua da mesma forma. Qual orientação para corrigir este problema?

Hello Everyone.From :How to plot the Fermat point of a triangle with Mathcad ?Thanks in advance for your time and help.Best Regards.Loi.

Hi experts,  this is my original equation, and I want to do the differentiate for every variable and simplify. but, I can only do it one by one, I think it takes me too much time if I have more variable in the equation. I would like to know any other methods could help me do it quickly. the attached file version is Mathcad 15. 

Please can you help me.I bought a single user MathCAD liscence many years ago, from Adept, but have since then always had a work mathcad tool available. I have been a heavy MathCAD user and supporter in my career and still am.I am now planning retirement and wish to continue to do some work in engineering, to support a disabled peoples charity, so need occational access to mathcad again.Please can you locate what type of licence I have and advise me how to gain access to the tool again.My address would have been 21 Yeldham Lock, Chelmsford, Essex, UK. when the licence was bought and worked for Marconi / GEC...Many Thanks, Robert 🙂

The installation files for my Mathcad 15 files are for M010 which is not supported by Windows 11. Does anyone know where I can download the M050 version?   

Dear experts,I have a question about curve fitting by using Mathcad.I have a formula call Steinmetz's equation. if I have a data like below figure.Based on the Steinmetz's equation, I want to solve the "a" ,"b" and "k" from each frequency.how do I use Mathcad to do the curve fitting.Could you please give me some example.       

Mathcad 15 has tools to align text or math equations horizontal in a straight line or vertical up or down.  See attached.  Is there a like set of tools in Prime 8.0?   

I'm having a hard time setting up the function to solve. Any help would be appreciated. I've attached a file of what I'm working on. I'm using MathCAD Prime 8.  

I am trying to solve a two point boundary value problem. Instead of three initial conditions for the problem, I am giving the value at the end of the solution interval. Can I use odesolve? My initial attempt (below and in attached worksheet) was not successful. If not what else? I have not solved this type of problem before. I know "shooting methods" are one possible approach, but I do not know how to set this up in MC. Any help would be appreciated. FYI I am using MC14, but saved the sheet as MC 11.  Thanks.  

In Mathcad Prime 8.0 the X and Y axis are reversed to what I normally see.  Y is usually up and down.  X is usually left to right.  Is there a way to reverse the Axis definitions?