Mathcad

Is PTC planning to offer in future versions of Prime backward compatibility with files created with Matcad 15?     

In attached file I'm trying to plot a function of time but am getting a "Replace complex values and NaNs by real numbers".  If I include units in my "t" range definition I can plot my second function.  If I exclude units I can plot my first function.  But not both at same time.  I can't see what is wrong.   

HiI get an error in the root function when a variable exceeds a specific number. See attached file.  Thanks in advance      

For x,y kind of dataset, it is required to perform numerical integration w.r.t. x'.The italiczied P represents Cauchy's Principal Value. Limits are from 0 to infinity.It was first tried to approximate the x,y data by combination of mathematical functions but didnot succeed as the data can not be modeled so easily and exactly.Apologies for not putting very clear image. I do not find any clue how to proceed on it. Thanks. 

I am analyzing a ground motion applied to a SDOF structure and finding the motion with Newmark's method. To accomplish this I have read the ground motion in with the readexcel function and then use a for loop to find the relative displacement, acceleration and velocity for each time step. The file used and the needed excel file are attached.     

Hello all, I recently got an error message when I opened Mathcad file, attached below. Error message saysAre there any means to resolve it? Thank you so muchKind regards   

Is there a way to get the plus minus sign ± into math field? I couldn't find it from the symbols list so I guess the only way of getting it into the document is to copy+paste. However, Mathcad doesn't allow me to paste it into math-field, only to text fields...

Is there an option to make default input type text and not math? I'm doing a machine design course and we have to use Mathcad to calculate the exercises. Majority of the document will therefore be text so it would be more convenient if it was the default option. Meaning that if I just start writing, it'd write text and not math. Math-field could then be activated using [ctrl] [m]

Hello everyone: I have a question about how mathcad prime handles the units in the background. See attached Mathcad Prime 3 spreadsheet for reference. Why does the top formula (i.e., the one where the variables have units) get a different answer than the bottom formula (i.e., the one where the variables don't have units)? Shouldn't it be the same since, in this particular formula, all of the units cancel out? And how is this program handling the units in the background? Does it use default units under the hood and then convert from those default units to whatever units you type in? Thanks in advance for your replies.

Hello there,I am new to mathcad and in my start I got a strange result: I am deviding a length of dimension m by a constant number and the result is not what I was expecting    H:=10 m soil layer thickness N:=5 number of calculation layers Dz: = H/N Dz= 400        

Does anyone know how to speed up MCP for processing large data sets? I am working with a 50832x14 size data set that is output in Excel from another program. I would prefer to filter, sort, and manipulate the data in MCP vs Excel. However, trying to execute a simple filter step in MCP on a data set this large has proven impossible. I can't get the function to complete (endless spinning wheel). Whereas I can complete this one step in Excel in about 1sec. Does anyone know how to speed this up? Or any other tricks for processing large data sets in MCP? I would really, really prefer to avoid Excel but at this point, I'll have to use it.Thanks!     

In the thirty-day trial.  Hoping this "bug" (see attached .pdf) turns out to be my mistake, because if not, PTC will have lost a customer.  

I have an old file that colleagues developed and they created variables like this: Rop%.  I'm trying to re-create and improve some plots, which use this variable, among other similar definitions.  When I retype the variable name, Mathcad tells me the variable is invalid; undefined.  For the life of me, I can't figure out why.  But it looks like the percent signs (%) have different fonts.  So it looks like there's something different about them, but I can't replicate it.  Please see attached.   

Does anyone know how to reduce the file size of a MCP sheet or other ways to speed up processing? I am working on a big calculation package that reads in Excel data (~30000x15) and manipulates it various times (loads of filtering, sorting, assigning submatrices, etc.) that is going on 20-30 pages. Now the file size is almost 18mb and the sheet is moving very slow and takes a while to save. TOL and CTOL are set to defaults, and I am trying the multithreading option. Only working on one sheet at a time. Are there any methods to speed things up? Maybe purge past data once a step has been made? I don't have much experience with the clear() function, but could this be of use here? Open for suggestions. Thanks!MCP 8.0, Windows 10 Pro.  

Hello, I need to have a conversation with support, licensing for ths product seems to be a joke and I am having issues. Brand new customer, just purchased the software.  no phone numbers for support is such a pain.      

 Hi! I surprisingly found that Mathcad calculates this simple expression wrong:  Both results must be the same. The second result is the correct one.It gets even worse in this case:  It seems that Mathcad accumulates floating point errors in sums, which can be easily avoided (or greatly reduced) by applying a proper summation algorithm. It costs nothing to implement, so why not do it?

I want to construct a program in such a manner that both the variables are unknown and whole number a+b=5a is a whole numberb is a whole numberb>aCould you please help?

HiI have plotted the results from two vectors. The graph resembles the shape of a half circle and I would like to find a function that fits the data so intersection points can be determined for other functions. I have tried many different curve-fitting tools but can't find a proper one that works.  I'm  thankful for any help!    

Can I extract the values in excel component from graph plotted? Even the vector does not get correctly assigned to the function

Hello to everybody,after the last automatic Windows 11 update, when I try to make a 3D plot, the following error message appears (in Italian) "Eccezione generata dalla destinazione della chiamata", which in English, more or less, corresponds to "Exception generated by call destination".Probably, the Windows update has modified some files used by Mathcad 15 for creating 3D plots.Please, can someone help me to recover that Mathcad 15 feature?Thank you very much,Sarah   

Occasionally, I'll insert a Visio object into MathCAD Prime (I'm using version 8) using copy/past (ctrl-c & ctrl-v).  This works and it's pretty much fine for most things - but I did notice the images look a tad fuzzy.    Is there anyway to improve upon this? It seems that copy/past from Visio to MathCAD Prime inserts an image into Prime - that is, the copied object is converted to an image upon pasting into Prime.  Is that correct?  If so, is there a way to increase the image resolution? I poked around attempting to insert an OLE object using Input/Output tab > Insert Object.  Maybe I don't know the best way to insert an OLE object - as my initial attempts were very sub-optimal - and difficult to work with compared to the simple action of copying and pasting objects. Any ideas? 

In earlier versions of Mathcad Prime, I could write the following expression:Simply put, I could define a variable symbolically and display the answer.  With the changes to the symbolic engine on Primate, this can no longer be done:This feature was great because I often used Mathcad during Engineering lectures to work examples problems.  My work around is:The first properly should use the symbolic equal to "=" and not the mathematical definition ":=" but it still works.  Anyone have any better suggestions or work arounds? Bob 

Hi! I want Mathcad to give me the derivative of a function symbolically, but it doesn't work. Any suggestions? Using Mathcad Prime 7    

Conversion process comes with 'FAILED'       

 Unable to open the file, pops up a warning that the file is not supported. please help