Mathcad

I am using Mathcad Prime 7.0 7.0.0.0Range Variable Evaluation results in Error at Other EquationsHere are the errors that I faced"This variable must be an integer".A range variable is used to evaluate other equations.When the range variable is evaluated, the other equations do not evaluate, for reason that "This variable must be an integer".When the range variable is NOT evaluated, the other equations evaluate, as expected.See attached screen shots of equations, one shows the variable evaluated, the other not evaluated.  By request, sample worksheet added. Question: What am I not understanding about the evaluation, or the NOT evaluation of the range variable?ANDAnother question might ask if the variable can be evaluated as an integer so that subsequent equations will still evaluate.Thanks.MGM

Hello   I am pretty new to mathcad. please help me to solve this .

As per this thread - same issues   Hi everybody, sorry for joining this post so late but I have the same issue as others here. I just started using MathCad and I am a bit overwhelmed. I have a XMCD file but my version of MathCad Prime 7 will only open MCDX files (I can't click on the converter). Would it be possible for someone to help me out and convert the file. It would really help me out. Thanks in advance and sorry for the inconvenience.  

Well, I am back.  I realize that the interest in COVID-19 Mathcad models may have waned; however, I have been tracking the data to estimate when the pandemic might essentially end.  I have also included the MIT model for the risk of indoor transmission.  This work is summarized in my report located here.https://www.dropbox.com/s/cplt4p8224sdnvd/PHYSICS%20OF%20COVID-19%20TRANSMISSION%20WORKING.pdf?dl=0 I did this research of the actual data because of so much misinformation in the news as well as government sources.  All of the data comes from the CDC.  I update and distribute this report weekly to various friends and family.  Since this work was originally inspired by this community, if there is sufficient interest, I will be happy to provide the two MATHCAD files and associated data files. 

Imagine that you open a physics textbook and see the formula m a = k F, with the explanation that this is a mathematical representation of Newton's second law, where m is mass, a is acceleration, F is force, and k is the universal force constant... You, of course, would be surprised and say that there should not be any letter k in this formula. But you would be answered in the sense that the constant k serves to translate the force expressed in kilograms-force (an auxiliary force unit) into newtons (the base force unit). People have long been accustomed to expressing force in kilograms-force (kgf), and not in some “incomprehensible” newtons (N). That is why this formula contains the value k, called a universal force constant. Force can be expressed in other common units—in dynes, in pounds-force, and so on. But all of them would first have to be converted into kilograms-forces, and only then inserted into the formula m a = k F. Read please more ib attach. What can you say about it? On

sir, as per this thread, can you help me with this equation, the unit of result according to my design code should be as Mpa (N/mm2).   the Mathcad file is attached 

I've added the following solution to the Rosetta Code task: Compare a list of strings   The new Mathcad entry is at https://rosettacode.org/wiki/Compare_a_list_of_strings#Mathcad   Given a list of arbitrarily many strings, show how to: • test if they are all lexically equal • test if every string is lexically less than the one after it (i.e. whether the list is in strict ascending order) Each of those two tests should result in a single true or false value, which could be used as the condition of an if statement or similar. If the input list has less than two elements, the tests should always return true.     As always, please feel free to improve upon and submit your own solution to this and the other Rosetta Stone tasks.   Stuart

Hello, everyone. My questions are very basic, but I need some help when I first encounter Mathcad.My questions are how to solve Partial derivatives and Indefinite&Definite integrals in Mathcad.I searched that through google, youtube etc. But I failed to solve.In most cases, I encountered an error called "MuPAD_unresponsive" and "This variable is not defined. Please make sure the label is set correctly.". I don't know why these error occurred. So, I would appreciate it if someone could let me know about the above. If you have instructions on how to use these as well as the overall tool, could you show it to me? And if possible,,,, could you make me a simple example file? 

I have functions, which are working fine when I call in the first time. But I get an error "This Value must be an integer" with any subsequent calls for the same functions... What is wrong? please help!

Hello All,I am a total newbie and I am trying to read through some previous mathcad solutions and am unsure what this syntax means, does anyone have any idea? Is it saying if mod(j,2)=0 AND mod(j,4)=2,-1,1) then return 0 (screenshot 1)? I have a older version of mathcad so I am also unsure how to write this in my version (screenshot 2). I have also attached the problem document where I found this (PDF).  Best Regards,MrTims

My goal is to produce a graph of ST vs pi(c) which is a variable from 5-60 with increments of 2 (dimensionless value). I have no idea why the value of tau(c) on the graph has an error and it said that this value must be a scalar. the value tau(c) should be dimensionless as well. Any help would be greatly appreciated.    

Hello All, Sorry for previous posts did not tag a answer, I am a newbie, will not happen again haha. For this post I am trying to read through some previous mathcad solutions and am unsure what this syntax means, does anyone have any idea? Is it saying if mod(j,2)=0 AND mod(j,4)=2,-1,1) then return 0 (screenshot 1)? I have a older version of mathcad so I am also unsure how to write this in my version (screenshot 2). I have also attached the problem document where I found this (PDF).  Best Regards.

can you help me, sir, for solving this problem, I want to solve (Icr) term?  

Hi All, I need help in achieving some calculation, which involves multiple looping inside.I am attaching the Mathcad sheet with some description of what I need t to achieve inside.I appreciate any approach through looping/ programming etc.   Thanks a lot

Relatively new user of MathCAD here. I am trying to define a series of piecewise functions using if functions, then plot them by evaluating the function over a vector with a simple programming loop. When I define the input vector (i.e. the x points) using elipses like so:   x:= 0 ft, 0.05ft .. 9.25 ft   , I get an error. When I manually define an input vector ("Matrix/Tables" tab, "Insert Matrix") it works. Two questions:   1) Why is this? What is different between the two definitions of the input x vector? 2) Is there a more efficient way to define the input vector than manually defining a matrix? Is there a more efficient way to be doing this in general?   Okay, so I lied about only 2 questions. My worksheet is attached.   Thanks,   - Kevin

Dear community,   I have a weird problem during installation of Mathcad Prime 5.0 Express. On three machines with Win10 the installation gets stucked at the "Application Selection". It does not show the list to select an application and I can not process with the installation. It's just an white empty screen. I had Mathcad Prime 4.0 installed before and uninstalled it.   What can I do to install Mathcad Prime 5.0?   Yours, Robert  

Hi, In Mathcad 15 there is a warning (green underline) when using a duplicate variable name. Is this possible in Prime 7?    

So my starting parameters are P1= 7.5 kW and n1= 750 rpm.   On the left side Mathcad is converting my units to SI which messes with my final results.   For this formula I have to use P1 in kW and n in rpm, which mathcad is changing into W and revolution per second. Right side is how to calculation is supposed to be going by the formula.   Is there a way I can fix this? I saw that in Mathcad 15 you could define a custom unit system. Is there anything like that for Mathcad Prime? Thank you!          

Hey Community!! I am using Mathcad in my work place and one of the problem requires extremely complicated solve blocks. The Solve block that I am working has near to 20 equations and 20 unknowns, it used to shoot errors that the units are not compatible, which I diagnosed after some work, but now the solve block works but the never end up getting solution. When I calculate the problem for a single point in an other Mathcad sheet it works very fast and nice. But when it is combined with equations in a solve block, it never finds a solution instead shoots error ("Solution not found, change guess value or tolerances"). I did try changing the guess values, nothing works and tolerance is set to 10^-1, the maximum that it could be set for. What should I do in such case? I used the guess values from my single point solution.I cannot upload the entire mathcad file because of company's privacy matters but I can attach screen shots.Thanks in Advance.    

HI Help with finding matching values:    

Why is the Symbolic engine of Mathcad 15 and Prime so lazy, why should I work for its?Luc! What about Mathcad 11 with Maple  Symbolic engine?   Mathcad Prime and meMaple

Hello, In the attached sheet, I want to plot Impact factor vs [h/delta static] but unable to. I am sure there is an easier and better way than i did so far. i saved the file as Mathcad 11.   Thanks, Sam

I need not simple solution, but best solution! Слабо?

Hello all, I hope you all are well.   Today my issue is the use of sbval to solve this 2nd order ODE. I have tried to follow solution steps published by other Mathcad users but I can't help but think the solver is getting stuck in a divide by zero or something equivalent? I have tried a couple different ways to define the function. Let me know what you think. 

Hello Community, I have been trying to access Refprop (Excel add-in) from MATHCAD Prime 6.0 through Excel Component. My requirement is Excel should take the input from MATHCAD and will paste the output generated in Excel back into MATHCAD. While executing, I found that it is writing the input in Excel given through MATHCAD but not calling the updated output values in EXCEL back into MATHCAD and showing the error. Later on, I found that it is entirely removing the VBA code for the required property function that's why it is showing an error.   Can I get an idea that how can I tackle this problem? or Is there any other way to integrate Refprop in MATHCAD? Could you please help as it will be part of my project?