Mathcad

Hello: I am retiring my old PC and setting up my new one. My Mathcad 15 Student Edition will not complete the installation process. It stops in the middle with the message "Module C:\Program Files (x86)\Mathcad15\tabler.ocx failed to register. HRESULT-2147010895. Contact your support personnel." I get the same message whether I check the box to get a new license or use an existing license. It does not get far enough to ask for me to point it to a license file . I have downloaded a license file keyed to the hard drive on the new machine, which PTC sent via e-mail, but it seems pretty strange. If I click on it, to see if it needs any further setup, it tries to set up a music player and organizer. It does not seem to have anything to do with Mathcad. So, that may be a second problem. Any help would be appreciated.

Imagine a circular fence that encloses one acre of grass. If you tie a goat to the inside of the fence, how long a rope do you need to allow the animal access to exactly half an acre?   https://www.quantamagazine.org/mathematician-solves-centuries-old-grazing-goat-problem-exactly-20201209/    

Luc

Hi all,I have a wee problem. I like to use excel spreadsheets within my mathcad files. To be exact I like the feature of using mathcad variables that feed into the excel doc, then take an excel cell and feed it out. So using an excel document as a little black box. I do this by using insert component, and selecting the number of inputs and outputs etc. However, I've recently discovered it doesn't seem to work with .xlsm files, that is macro enabled excel docs. When I attempt to do it my output mathcad variable goes red and says output range invalid. I've tried saving the excel doc as a 'Normal' .xls file and while it fixes this particular problem, the actual file no longer works.Any ideas?Thanks

Hi  I have a big formula where I would like to make 3 symb substitutions. But I get an error. I would need this formula to minerr it to this 3 new Values and not to the k-values. I would be happy if someone could find a solution. THANKS I use PRIME 6.0  

I have been working with a system odes and have serveral questions about error messages.   I have been using Radau (system is stiff; solutions have sharp peaks). For a certain range of parameters I get the message "The return value of this function must match the problem size" referring to the vector the the rhs's. I circumvented the problem by switching to BDF. But what does this message mean? (I couldnt find it in the list of error messages.)   Then, I wanted to try Stffb and Stiffr. I had 10 equations and got the message "does not solve more than 8". Ok, I reduced the system to 8, but still got the message. Then reduced it to 7, thinking the message actually meant 8 or more, but got the same message. Then reduced it to 7 and I get the message "This value must be real."   Can anyone help? Happy Holidays!

I am trying out MathCad 15 and keep getting an error message that I have never seen before (I have used MathCad 6 and 13 in the past). If I enter something like Frequency:=60 and then try Frequency= , I get an error message that says Library Not Registered. What is it trying to tell me? Thanks for the help.

Hello everyone! I have a problem with the following case:   I used the function Match (value, vector, "near") to find the row in which the vector has the wanted value.   But instead of finding a one value, I would like to create a function that would find a series of rows (Please see the attachment) But the function I created does not do the trick. I would appreciate any help      

I have installed the software successfully but cannot run it. As soon I open the program, I get an error" An unhandled exception occurred on the dispatcher thread"

Does anyone know how to export string variables to text or CSV files withour quoation marks "" in MathCad Prime?This used to be easy in MathCad 15 using the Insert\Data\File Ouput.Thanks, colin

Hello All,   In the attached mathcad15, i'd like to automate the output "Z.summary"  for each steel thickness "ts" instead of doing each individually. On page 6, i had to create Z summary for each steel thickness ts=0.142, 0.150, .... How can i have it show for each steel thickness the corresponding Z.summary without having to individually putin the row number 0,1,..? i showed the results for Zsummary for t=0.142 and 0.150.   Thank you, Sam

nie moge korzystać z pełnej wersji

I have a program that works (PPPWorks_12_19_2020) for solving a system of odes using Radau with the Jacobian (I am using this because the solutions have peaks which are slightly better resolved with this choice). I made what I thought was an innocuous change (PPPNoWork_12_19_2020) adding the equation dA=0 so that I could set the value of A in the initial conditions. Now the calculation for the Jacobian grinds away for a while, then crashes MathCad. What did I do wrong? Maybe I now have two many equations d(...)= 0 for setting parameters in the IC? Any suggestions?

Hi all,   I have a slight problem with my code. I have highlighted and explained the flow as well as i can. Please let me know if further clarification is required. The .mcd file is also attached for your reference. My question: When I look at the values of U_n and PTCU_n, the values seem to keep increasing indefinitely. In theory, PTCU_n should stabilize at 75% when tn_n reaches 6xRTC and not increase any further. I am not sure where I am going wrong.   Thoughts?   Any help is appreciated. Thank you in advance!        

Hi everybody,   I ask you because I don’t know any solution. I have some Data in the given Ex-celsheet. Interesting is the force F_S0_org and the according time t. This is the red plot in the diagram. I want to read out the time when the force F_S0_org is higher than the parameter GW for the first and for the last time. (For all three curves, to seperate them later) But my program gives me back all the the times. The problem is, that I don’t know how to realize an exit option for my if condition after it found the first time…. Something like break or continue. But it doesn’t do anything when I use these commands. You can see that in the diagram. The vertical blue lines are the times. So you can say that I want only the left and right side of the blue blocks.   Sorry for my bad english, I’m a german guy. Wish you a safe Christmas. 🙂 Thanks Paul.

Why someone is not correct? See lpease the picture and Prime 3 sheet in attach.

I try using Solve Block to find the solution of an equation by fixing "FS" to a constant value using the variables "alpha" and "w".  But it doesn't seem like working even it shows no error message.  Also, the unit for "alpha" supposed to be in "degrees".     The file is attached.  The first part of the worksheet calculate FS using the correct "alpha" and "w" values.  The solve block on 2nd page used the trial values of "alpha" and "w" to solve the equation.   Please advise.   Thanks,   Vincent

for learing it

Now in Prime too... Nice day!

Hello, how do i get the "CheckBrdg" yield the answer in a matrix format? please see attached sheet!   Thanks, Sam  

Mathcad Prime 3 doesn't work. Error "An Unhandle exceptionError "An unhandled exception occured in the dispatcher thread. See C:\ProgramData\PTC\Mathcad Prime\Logs\MathcadPrime_Exceptions_XXXXXXX_XXXXXX.log for more information." after launching Mathcad Prime

HelloI am having issues with the "find function". I am trying to solve for the reactions of the structure in the attached file. I've been wrestling with it for a while now and am finally asking for help.   Despite my units working out in the equations, MathCAD refuses to solve it. I am not sure what I am doing wrong.Some advice would be greatly appreciated.

Hi,   Good day.  Anyone could help me to make a tabulated graph similar to what I attached Material is aluminum  Moment of inertia is given 58.97 cm^4 I am using  Prime 6.0  Design pressure is given deflection criteria  L/200 Thank you.

I have problem with the command "if" in 3D solutions and graphs. In the sample you can find my mistake and please help what we can do with it.

Hi, I also know how to interchange more than two columns between two arrays, as shown in the attached file.   Thanks.