Mathcad

Please help. I am not sure why it is complaining about the units. Both numerator and denominator are in Ohms zd1(s) ---> Ohms (numerator) s*L1 ---> Ohms (denominator)

I tried already many times to activate the licence but it keeps on failing. The following error appears: 11.09.2020 15:40:53 : Die Lizenzanfrage ist fehlgeschlagen. Requesting MATHCAD ... C:\Users\simon\Downloads\sw_license_email_4816628.dat: (-9) Invalid host. Hope you can help me. Thank you in advance

Hi folks,   I'm trying to define custom units in Mathcad Prime 6.0, but for some reason I don't seem to be able to. I define the unit as a variable and then try to change the label to "Unit", but Mathcad doesn't keep the change.    I used to do this in previous versions within a nanosecond, now it doesn't seem to be working, so I'm wondering if this is a bug in the software or I'm missing something...   Anyway, just putting it out there to see if anyone has faced this issue with Prime 6.0.   Thank you!   J.

Request for Mathcad 15 Trial license: 00-05-9A-3C-7A-00 & F8-94-C2-89-EF-2C

I am trying to plot the acoustic mode shapes inside a cylindrical pipe. The equation is in cylindrical coordinates in attached Mathcad file. Any assistance would be appreciated.. Thanks Ross 

Fixed-Point Iteration for nonlinear systems of equations - my Mathcad alghoritm doesn't work   Hello, I try to make my Mathcad alghoritm to work for a nonlinear system by using Fixed-Point Iteration .  Unfortunately still I cannot get the results. Something is missing in my script. I attached my Mathcad file.   The results whould look finally like this  (I obtained it in Excel in order to compare the results if possible): It     xold     yold    x              y      errx         erry    errf10    errf20-----------------------------------------------1 2.0000 4.0000 1.4142 6.0828 0.5858 2.0828 0.6023 23.75692 1.4142 6.0828 1.6132 7.3348 0.1990 1.2520 3.2299 9.45173 1.6132 7.3348 2.4150 6.9238 0.8018 0.4109 4.8888 38.85024 2.4150 6.9238 3.2743 5.6438 0.8593 1.2800 1.

What are the (key) differences between Mathcad 11 and Mathcad 15 (e.g. in terms of capabilities, etc)?And what's your opinion about Mathcad vs other mathematics software packages like Matlab, Maple or Wolfram Mathematica?

The installation on Windows 10 failed. Is there any chance to be installed on this OS ?

Hello,I encountered a problem with the Bode Diagrams...How can correct the Phase Plot of the Bode Diagrams for a system which has, for example and simplicity,  two poles in origins? The Phase Plot shows that the system has a +180 degree which is not correct. The system should have a -180 degree.Thank you.

How to plot complex impedances where it is a product of 2 complex functions        Impedances of a capacitor  Zc = 1/s*c(s) and the unit is Farad      where s is the Laplace Domain variable = 1j*w = 1j*2*pi*frequency      in my case, c(s) is the capacitance but is a function of s   I want to plot the magnitude of Zc = {[Re(Zc)]^2+[I'm(Zc)]^2}^0.5 versus frequency   If  Zc is evaluated with "=", the result returns a scalar   I asked PTC helps and they said it is because I have 2 vectors multiplied together, so it returns a scalar. They recommend to vectorize the Zc expression but if you do that, it return a complex impedances of 1000 frequencies (the # of points I have), and then find a way to convert the 1000 complex impedances into the magnitude of each of the 1000 complex impedances.   My question is: Why do I have to vectorize the Zc expression? Is there another way to do it that does not need to vectori

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