Mathcad

Same problem. Can you help me? Where to find contact wit PTC?

Hi,In the attached I show a simple example of referencing a matrix element with two approaches.  When I use ORIGIN:=1 the second method fails.  Is this due to my incorrect use of the second method? The 1st method uses the matrix index from Vector/Matrix Operators menu.  The 2nd method is just A(row,col). thanks,russ

Hi experts, I have some questions about the math calculation problems (case 1 and case 2), please see below description and the Mathcad file. For case 1: I have fire different resistance needs to be calculated. so I try to use two ways to calculate it.the first one is like that, I calculate every resistance separately and add them up to get the total resistance.but I think this is not a good way when I have a lot of resistance.The other way, I try to use the matrix way to do it. it is more convenient but I don't know how to calculate the total value by using a matrix.For case 2: I want to change the Width from 0.1mm to 0.91mm and also have 5 resistance.but when I try to define the Width from 0.1mm to 0.91mm. my calculation can't work.For example, if width = 0.1mm, I want to calculate the total resistance based on width = 0.1mmif width = 0.2mm, I want to calculate the total resistance based on width = 0.2mmif width = 0.3mm, I want to calculate the total res

I've seen a couple of PTC articles showing a symbolic solve block using a 'dummy' variable in the solve variable list (which isn't represented in the solve expressions).  The examples involved inequalities.  They use  't'  and it appears needed to force a comprehensive result.  I attach a file with two examples. Does someone know the intention, and interpretation, of this dummy variable?

Hello, I am trying to activate/transfer our Mathcad license to a new computer. After clicking "activate" in Mathcad Prime 3.1, it displays the correct MAC address of our new computer, but it is also asking me for a product code to complete activation. Where can I find the product code? Thank you.

I've converted a MathCAD file into MathCAD Prime (ver. 7).   For some reason the plot doesn't show.   The functions appear to be working.   Not sure what I'm doing wrong.  (see attached screen capture) EDIT - attached Mathcad Prime document

I find the calculation options in 8.0 very constraining compared to 2001i Professional, which I had previously used for 20 years.  In 8.0, if you don't enable "Stop all calculations,"  the program solves the entire worksheet every time a change is made in a subroutine.  In 2001i in auto mode there was no action until you dropped down to the page using the subroutine- and even then it only executed down to that page.  In 8.0 if you are converting several data files in the same program, it will execute all of them every time a subroutine change is made.  This can mean significant finger twiddling.  In the prior version, you could move back and forth from the subroutine to the first data set and optimize or modify the conversion process without the time penalty associated with processing the later cases.  Or is there a work-around? 

Greetings, Across all industries, when we do math we often want to find the minimum or maximum point of a function. There are many ways, but the most reliable is to do it iteratively. I have built a function that does this. Attached is the function itself. Put it in a closed area at the start of your template so that you can always call it. The inputs of optima(f,x0,xf) are any single variable function "f", and the starting value "x0" and ending value "xf" of the domain of that function. It outputs the x value of the function at its maxima, the value at that x value, the x value of the minima, and the value of the function at its minima. It finds absolute maxima and minima of the function only. You can make a multivariable function be single variable by defining a new function of a single variable, where the other inputs are all constants. For example, f(x)=g(x,c1,c2,c3) This is the interesting part: To make it run quickly but still get a precise answer, I split the proc

I am using Mathcad Prime Release 8.0 and Datecode8.0.0.0I have set of formulas with a units. If I change the unit on the result of the first formula the following formulas are loosing their unit.Here are the errors that I facedNo error message or warning. Inconsistent results.

Please have a look at the following example-function:If I want to plot this function with Newton (N) on the y-Axes and Millimeters (mm) on the x-Axes, the following happens:Unfortunately my Mathcad Prime 8.0 is in German, but the error is the following:Plotting failed. Replace complex Values or NaN-values with real numbers.Also you can see that it replaces mm with mm / m. If I erase the units out of the fuction like this:Then it will work, as you can see here: Does somebody know how I can fix this, so that I do not have to erase the units from my function?I will leave the mathcad-document attached here.GreetingsSpedex

Hi Experts, I am a beginner to use Mathcad.and I have a question about the flow chart.Please see the below figure, I can do the below figure by using Matlab, but I am confused about how to use Mathcad to do the same thing, can someone give an example of how to do it, thanks. 

I have a 4 row vector (A) and a 2 row vector (B) and I want to multiply the 1st two row elements of (A) each by the first element of (B) and the 3rd & 4th row elements of (A) each by the 2nd row element of (B). I want to do this element by element to give me a 4 row vector at the end. It's made more complicated by the fact the numbers of rows in both vectors can change although (A) will always have twice the number of rows as (B). I thought of trying to match the number of rows in (B) to (A) so I can simply multiply the two but not sure how to go about this.  Any help appreciated.  

Hi, Everyone.From the following: Thanks in advance for your time and help.Best Regards.Loi.  

Hi, Everyone.From the following:   How to join 4 Patches, the above, into one Mathcad structure ? (or reverse: "split" ?) Thanks in advance for your time and help.Best Regards.Loi.  

 Can PTC MathCAD create the symbol that I've highlighted in the attached photo?  (the vertical bar with the variable set to some specific value) 

What am I doing wrong? 

Hi,I am a little confused about the matrix (m,n,f).I don't very understand what's the role of f in this function. I try to use this function to do some tests, but I still don't understand why I will get these results.I don't define the i, j but the Matcahd can do the calculation.Can someone use an easy example to explain this function to me, it is hard for me to understand it.  

While still getting used to Prime 7  I stumbled across an article that was a detailed listing of all the differences between the Legacy Symbolics Engine and the New Symbolics Engine.  It detailed format differences, equation and variable ordering changes, computational changes, etc., and was many pages long.  I didn't save it and now cannot find it again.  Does anyone have a reference or link to that?

Hi All,I have been on a very long journey getting old MathCAD 15 files in our filestore converted into MathCAD prime format. I thought that the journey had finished a long time ago but discovered more files recently. As MathCAD 15 was centrally licensed from a server and this server has now gone, I was hoping the community / PTC would help get me a temporary license for 15 to allow the converter to work.. We are fully licensed (only two) for MathCAD prime and I find the converter requirement to have the old and the new products licensed a really painful experience.  Thanks for the help in advance. Ben

As of now it is possible to solve Ordinary Differential Equations (ODE) symbolically in Mathcad, as long as: -the ODE is linear (does not involve powers or products of the sought function or its derivatives), and -the coefficients of the derivatives are constant (do not depend on the independent variable). This means you can solve: The result is: Check out the attachments for further information.   The solver "LODEsolve" (reference file for insertion in your sheet) and an example usage file "LM_20200923_LODEsolve" are attached. If you're using: - Mathcad 11, use LODEsolve.mcd (it will NOT work in Mathcad 15) and check out example file LM_20200923_LODEsolve.mcd. - Mathcad 15 use LODEsolve.xmcd  and check out example file LM_20200923_LODEsolve.xmcd. If you're using (any version of) mathcad Prime: Install Mathcad 15 and use that before you can benefit.   Comments, kudos and suggestions for improvement are welcome.   Success!Luc   (Thank you @Werner_E for convers

I want to integrate old version MathCAD to my Web API. How can I do it? Maybe you know how to use P/Invoke in this case. Also I try to use DDE, but I dont understand, what is item in MathCad (in excel it is cell, for example).

Hi, Everyone.From the following:   Any idea to complete 12 faces of Polyhedron("28") ?   Thanks in advance for your time and help.Best Regards.Loi.  

I'm using MathCAD Prime 8.0.I want to highlight the results when the results reach some limit.For example, the calculated result is in white normally, and when it reaches the limit it's in red to give an alarm. 😃

I properly purchased Prime 7.0 last February.  But I can't get any support, submit a bug report, or upgrade to Prime 8, because the first thing I must do is enter the Product Code.  I enter it - it's right here in my purchase documents along with my SON, SCN, etc.   But... I immediately get the message that itis not a valid Product Code.  I get nowhere, cannot even get through to the listed phone number.   Any advice would be greatly appreciated.

Hi, can anyone help me with converting this file to mcdx format? Thanks in advance