Mathcad

I am trying to fit data to a "First Order Plus Dead Time" model. I can optimize the fit by using the solution to the FOPDT equation, but, simply as an intellectual exercise, I would like to also be able to do this using the FOPDT differential equation. I have Python code that can do this (it takes an incredibly long time to run; I would guess that Mathcad would take much more time).   The nub problem of the problem as I see it, is that I think I need an optimization solve block to do the least squares fit which, in turn, then needs to call an odesolve solve block with parameters.   I quickly realized that I don't have a clue as to how to do this, and I haven't found any "parameterized solve block" examples that return odesolve solutions.   Attached are my Prime 6 worksheet, text file of data, and PDF of worksheet.   Many thanks, Roger Gunwaldsen  

Hello. I have a problem with charts.   Everything works fine in Mathcad 14 but in Prime 3.0 i have an error like below:Mathcad Prime 3.0   Mathcad 14 Is this a problem with if-else instruction or something?  Can you help me?  

installing mathcad and license

Hi, I'm new to the site. Does anyone have some calculation sheet for the water & wastewater industry? Desalination? Membrane treatment? Nothing specific, but I would like to start following some examples of people with more experience than me and what kind of tools usage Are more useful for this industry.  Please, let me know! Regards

Dear all,   I am trying to convert a vector of strings vectstrn=("var1", "var2", ... , "varN") into an equivalent vector or variables vecvar=(var1, var2, ... , varN). Then I would need to assign this variable names to another vector of values already existing.   Can anyone help me with this issue?   Thanks in advance

How can I better display 3D results in matrix equations? An example in the appendix. I have tried to separate everything but it is very tedious. It is very important to me that all the results are 3D.

So i am trying to use the WriteCSV() function When my my array im writing out does not have units it seems to work When it does have units i get an error!    Please tell me i dont have to go delete all the units.

The documentation is so absurdly poor for Mathcad i cant believe i have to ask this and or cant find it on the web.   How do you access data in an array!   I want to create a simple vector and then access bits of it later!! i can not believe this syntax is not available   Array(100,100):= 0 then i simply want to read or write to say element 1X1   So i want to display   Array(1,1) =  0    And have it show zero   Why is everything 10 times harder with mathcad then it needs to be.   

Hi, I'm newbie to mathcad and i have a issue to configure a smps and i want to find the input impedance of the power supply, my problem is that the my array INC:=1;2000 doesn't work and if i put a fixed value it say's "All evaluations resulted in either an error or a complex result". I put the pdf and the images below.Thank you!      

Could someone convert the attached file? Please, ASAP.

R(4)=1/2, R(6)=7/12. How about R(8), R(12) and R(20)?

Can you please share the download link for Mathcad 15

Cant solve the equation as the variable is coming undefined! Any help appreciated        

Книга "Физико-математические этюды с Mathcad и Интернет" Цветные рисунки, анимации и файлы этюда 13 ПУТЕШЕСТВИЕ ОКРУЖНОСТИ В ТРЕУГОЛЬНИКЕ,  А ТРЕУГОЛЬНИКА В ЛОЖБИНЕ,  ИЛИ САМ СЕБЕ КОМПЬЮТЕРНЫЙ РЕЖИССЕР The book "Physical and Mathematical Studies with Mathcad and Internet"Color drawings, animations and files of the study 13THE ROUTE OF THE ENVIRONMENT IN THE TRIANGLE, AND THE TRIANGLE IN THE hollow, OR THE SELF COMPUTER DIRECTOR

Hi!Is it possible to return a plot in MC15 from a progam?Background: I have multiple excel files with data.   Using the READEXCEL i want to take the data for each file and plot a fitted curve (polyfit(X,Y,2)) for each file   I cannot find any commands to output a plot   RegardsSiggi

I don't see it in my standard license file either. Is it a combination of customer number or install site numbers? Obviously I'm having trouble getting this installed. Any help would be appreciated.   Dean

I want to simply find one thing.    I have a rather large system fo equations and I just want to find one answer.  Is there a way to put a single variable in a find statement.    So if I have a system with X1 X2 X3 ...... X100   I don't want to have to have the following.  A 100X1 := find(X1......X100) Its unmanable because all it does is run all over the page.  I used to be able to do this in prime.    I simply want to be able to find one variable.    Answer := find (X33)    How can I do this in 15?

I need to install the software again but I can't find it anywhere. I have the PTC Mathcad Prime 3.1 Student Edition – Perpetual License

I got a new computer and am trying to install the 30-day trial of MathCad Prime 6.0. In the license manager, when I try to log in, I get the error "The server committed a protocol violation. Section=ResponseHeader Detail=CR must be followed by LF." I am unable to install the trial license. I found the page https://community.ptc.com/t5/PTC-Mathcad/MathCAD-Prime-MC-15-License-error/td-p/638563 that told another user with the same issue to open a case. I tried doing that, and the webpage to open a case says that the only option available to me is to post to the community. Does anyone know what this error means and how to fix it?

Dear all1.When i substitute all variables results of y(i,x) matrix in matrix and hard to plot, How can plot y(i,x) ? 2.After I can not do 1 above I try to manual by stack but Results still  Matrix in matrix,Can we automatic stack the element of matrix y(i,x) (red circle in attachment) ?3.Or you can revise my technique to better and easy? thank you  

I have defined a function to find the slope of a circular plate with a hole as a function of the radius.  I want to find the minimum slope which occurs somewhere between the inside and outside radius.  I can only use the max() function if the results are in a matrix.  The defined function is not considered a matrix in Prime.  I was going to use the WRITEPRN function (and read the values back in) but when I do that, only the last value is printed in the PRN file.  Attached is the worksheet.  Any ideas on what I'm doing wrong?  Thanks in advance. 

Dear all friend, how to interpolation as equation in highlight?my row of ( fi,Nc ,Nq,Naq ) start from 0 to 50 or more than.Please help explain us. thank you all in advance.    

I've tried searching online and here in order to find the solution for L. I'm pretty much a newbie although I should really work on that. So how in the world do I get this to find L.    I've attached my worksheet, I don't know what I'm doing wrong. Thanks!

In need of trial link to try out the software