Mathcad

Hi, I am trying to make a calculation sheet however i have unit problems since mathcad doesn't seem to work correctly. First is calculating parallel resistance gives a weird result but can manually be corrected.  For example RPV should come as ohms then further down Ilimh*RPV should clearly come as volts.....

MathCAD seems to recognise milli-, kilo- and mega- versions of certain units (eg mW, kW, MW, mm, km) but not others (eg kJ, MJ, kmol).  I find that I am almost always having to start a worksheet by defining kJ or kmol ... which is a real nuisance and seems unneccesary. So:- what is the rationale behind the units that have kilo-, milli- or mega- versions?- is there a way of ensuring that these combos are defined for every worksheet (the new Prime 11 units change is no help here)? 

I have a version of Mathcad 5.0 which I downloaded in 2019.I would like to install and run on a new computer.Can you advise if this is possible?

Good morning, PTC Community:I am getting stuck in quite a simple solve block. See attached for pipe min wall thickness calculation.A sensible solution for OD is somewhere slightly greater than 0.60-inch.Is this related to TOL or CTOL commands? Even if I take the TOL or CTOL off, the solution gets stuck in the solver.Do I have too many items in the Guess block?I use Mathcad Prime 10.0.1.0. Your review and suggestions for a fix will be appreciated. Regards,Joseph T.

Since @ttokoro  recently once again tried to take us into the world of riddles and puzzles (-> Find BC:CD - PTC Community), I thought I would follow up with a problem that I dealt with some time ago.   Its the 123 year old Haberdasher problem, posed originally by the famous puzzle inventor Henry Dudeney. Actually there are various different publishing dates around - 1902, 1903, 1907 ...   The task is to divide an equilateral triangle of side length 1 with three straight, but not necessarily continuous, cuts into four parts so that they can then be put together to form a square. Dudeney provided the solution only in the form of a drawing, but without specifying the exact dimensions. Let D and E be the midpoints of AC and AB. The first cut runs from E to a point F on AB. The other two cuts run from D and G perpedicular to EF. G is a point an AB and it can easily be seen that AG = AF+0.5 (or equivalent GB = 0.5-AF). The four pieces now can be assembled to form

Mathcad prime 10Getting an error when tried to save"The file type is not supported. Logfile is located at C:\ProgramData\PTC\MathcadPrime\Logs\MathcadPrime_Exception_20250505_102636.log" I can't locate this file

I've been using Mathcad Prime 3.0 for a few years now.  With annual subscriptions, I'd expect that updates would keep me current, but seeing that there's a version 11.0 now, looks like I was wrong.   My IT department loaded 3.0 on my new laptop, which should have been the same as on my old desktop, but I cannot open the files created previously.  I get the message "This file is not compatible with your current version of Mathcad, because it is from a more recent version of Mathcad".   Any ideas on why this is happening?   What later versions of Prime would still be able to open these 3.0 files?

first time posting a question and I lack experience about using Mathcad Prime 9.I was trying to realize what I have done in MATLAB by using Mathcad prime 9. After judging the working range(time) , and calculating the corresponding currents, I hope to plot the result on a 2D sheet but find no solutions.

Hello PTC Mathcad Community: The ORIGIN:=1 command never works correctly for me.See attached. I run Mathcad Prime 10.0.1.0.If you have a suggestion to fix this, please advise. Thanks,thodij

I have run into this "Bad_Solve_Body" unknown error in my first solve block in the attached.Just to make sure that I can indeed construct solve blocks correctly, I tried a second solve block, and all looks well. Could you please take a look at the first solve block and let me know what could be wrong?I use Mathcad Prime 10.0.1.0. Thanks much.Joseph Thodiyil

After a computer crash, I tried to install Mathcad 14 (I have the license file and DVD) from the DVD on a spare computer running Windows 11 Home. The installation aborted with a message stating that not all files could be installed. What do I need to do to ensure a successful installation?

I have installed Matchcad 11.0.0.0 in my PC. I want to activate the purchased license.  When I want to get the mailed license, the system ask me to get product code for Mathcad 11.0.0.0.  Where can I get the code?Thanks Tim 

I want to install Mcad Pime 3.0 - I am changing to a new computer.

I am trying to install Mathcad Prime trial. My problem is that I am ont receiving a installation email after submitting my information on your website. I have checked my spam folder and it is not there either.

So I have just installed MathCAD Prime 11 so that I can finally have custom units. So now I can get 'MPa' and mm as my preferred units, but how do I get MathCAD Prime 11 to evaluate a moment as 'kNm' instead of  'J' (joules)?

My Mathcad 15 license is no longer functions for last several days (offers to open License Wizard every time when starting. Despite pointing to correct license file, it does not work on next attempt to start). The same license file worked normally for years. The same license file works fine for Prime 5. cpuid.exe returns a HostID matching the license file. I downloaded a new license file, also not working. Nothing else changed on computer as far as I know. It does not appear I can get PTC support as a legacy user. Any ideas anyone has would be greatly appreciated.

Hello Everyone.From : To :       Symbolic Evaluate ? ( MC 15 )Thanks in advance.Regards.

People have been asking for this since at least 2013. Case in point: https://community.ptc.com/t5/PTC-Mathcad/Setting-default-units-in-Mathcad-Prime-3-0/m-p/59447#M23559   This seems like a pretty trivial thing, so it kinda just blows my mind that eight years later we STILL cannot modify the default units for results in Mathcad Prime, like we were able to in Mathcad 15.   To make it clear what I'm talking about: I understand that I can set the default unit SYSTEM, (to SI, USCS, or CGS) which is great and all.However, let's say for example I'd like for all pressure calculation results to have units of KSI by default. In Mathcad Prime, this very simple feature is not included. The program displays all USCS pressure calculation results in PSI. I can then manually change the units of the result to be whatever I'd like, of course. But imagine doing this over and over again while doing a series of lengthy calculations. This wasted time adds up, my workflow is impacted, and the resu

Hey, how did you do it ? I need to convert .xcmd to .sm urgently  

Find BC:CD

Hi thereI want to exclude some values from d when it is bigger than the width .... I want the program to just exclude the values that do not fulfil the condition, I used this program ,but it shows strange error ...I'm sure both of them have the same units How to fix this ? 

It says program ID already expired, but i never had a trial for mathcad. help.

Hello guys, I have few simple short questions regarding MathCAD if you can answer them.. Is Conditional Formatting avalible in Mathcad sheet? If yes, how to access it?Is it possible to lock the coding of Advanced Input/Output Commands separately without using the Area Box`s Password Protection?I`ve been using plots from a long time and now I need my graph to display X & Y coordinates exactly at the plotting point. How to do that?I have 50+ worksheets from the Legacy Mathcad (xmcd.) and currently, I`m using Mathcad Prime 10. When I try to convert those files, I`m getting errors in the equations where there was "multiplication" involved. How to solve that?Just as the function of MS Excel`s 'vlookup', I want to use the "if loop" that mathcad has. How to do it? (Example: Consider that, I have an excel sheet data where if I use the data of one column, all the other column data should also get updated. I can`t be able to access it.If, I could get answers for all these, I`d be very m

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I have an expression that needs to evaluate sin (x)/x for x =0. I was doing this with simple program with if'sBut Luc suggested I use sinc I know these are the same and even checked by evaluating them numerically.  But if I use the sinc expression, it must mess up something later in the worksheet because the results are completely different. (And it is the form with the if's that I know is correct.). I cannot figure out what is happening. Since I have a version that works, maybe I should just ignore the issue and move on, but, if someone can help, I would like to know what is going on. I have posted the worksheets in MC14 and MC11. Both contain the expressions for PHI but evaluation is disabled for the sinc form. Results are given in graphs at the bottom of the worksheets.