Mathcad

Hi,I am new to Mathcad and face some problems. I have attached a file in which I am trying to plot the displacement using the Piecewise Linear Interpolation method of structural dynamics. I have defined all variables and put them in the loop, but when I try to plot displacement (u) versus time (t1), I get an error "this value must be a vector".I would really appreciate it if you could help me resolve this issue.      

Hi everyone.So I'm new to Mathcad and I wanted to create circle from form (x-1)^2+(y-3)^2=10, but everything that I can find about plots is way too advanced for me. Any simple way to do circle from form like this above?  

Hi, Could someone explain why I can't vectorize method 2 in the attached work sheet? It returns error message "this value must be a vector". The output of both functions being multiplied seem to be vectors, so I don't understand why I can't use the vectorize function to do an element per element multiplication. Thank you, 

Using Mathcad Prime 8.0.I am trying to define a variable in a matrix format, where variable has an index i= 1,2,..5.I am able to define all variables, but cannot use a single entry, let's say d5. What is the proper way of defining my variable in such case? I tried with both matrix and table, getting same, "underdefined" fail. I also would like one oth the variables to depend on the others, namely l3=h-l1-l2-l4-l5(these are partial lengths of the entire hight of construction). Can one define such variables in Mathcad Prime? 

Hello,In MathCAD 15, you can use " If" and "And" to satisfy two conditions. i don't see" And" in Prime. How do i do that in Prime? Thanks,Sam    

J and Big Omega are 3x3 matrices. Little omega is a 3x1. Mathcad will not solve this with the matrices defined and gets the wrong answer with them undefined. Nu should be equal to (Omega)*J*(Little Omega). Any idea why this is happening?(Mathcad Prime 9.0)        

This month’s challenge is fairly open-ended: create art in Mathcad Prime. Using the Chart Component, XY Plot, Polar Plot, Contour Plot, or 3D Plot, create some kind of image that evokes the beauty of math. It can be as simple or as complex as you want. Here are a couple 2D curves I created:   Here is a surface called a “monkey saddle” along with 3D Plots of its Gaussian curvature and mean curvature:   Feel free to make something light-hearted and fun. Someone posted an equation for the chest symbol for a certain caped crusader online. Here is that equation adapted for the Chart Component in Mathcad Prime:   One resource that I have used for my curves and surfaces is “Modern Differential Geometry of Curves and Surfaces” by Alfred Gray. Many of the equations can be adapted for graphing in Mathcad. What art can you make with Mathcad?   Find the Mathcad Community Challenge Guidelines here!  

After Mathcad 15 worksheet conversion into Mathcad Prime 9 I'm getting an error: Please help. Mathcad 15 did not produce an error on those matrix division.  

Can i update my READEXCEL value automatically by updating my excel instead of redefining it again? 

HiI need use command addline.I don't see the command addline in the PTC Mathcad Prime 9.0.0.0I had seen this command in previous versions of this program, but not nowplease guide me.  

Hello, I recently updated from Mathcad 15 to Mathcad Prime (8.0) and am having a problem with certain worksheets that contain a specific type of program. Specifically, programs where the calculation is dependent upon elements from the output vector that should already have been calculated. ie  x[i = x[(i-1) + y[i (sorry for the notation - can't work out how to get subscripts on this forum). I have attached a simple example worksheet of the problem. Is this type of self-referential programming no longer possible. If so can anyone suggest a work-around?   Apologies if this question has been asked and answered already. I had a look using the search function but was not able to find anything obvious. Many thanks for any assistance. Ian

Will PTC close licence for MathCAD 15? Or licence will be still available, just support will be available?    

Good morning community. I am new to using this program, the question I have is how to generate a matrix from the combination of results of 02 functions, I attach the question file. I would like to thank someone who can clear up my doubts. The version is PTC Mathcad Prime 6.0.0. Thanks in advance..   Translated by the Community Moderation using Google Translate   Buen día comunidad. Soy nuevo en el uso de este programa, la duda que tengo, es como generar una matriz a partir de la combinación de resultados de 02 funciones, adjunto el archivo de la pregunta. Leía agradecer que alguien pueda absolver mis dudas. la versión es PTC Mathcad Prime 6.0.0. Gracias de antemano.        

I am Working on a Satellite data, where information is stored in a Raw data exchange format .prd file, i have extracted the information in csv file where i got the I and Q data in decimal, now i wanted to apply fourier transform, power spectral density for getting the doppler. i am working on python can anyone help me regarding this...Note that i have a large data set which is about 144crores but i have divided it into chunks..Thank you     

Hola a todos, Soy nuevo en publicar aquí.Como puedo encontrar el valor que le corresponde a un numero de una matriz (buscar) en una columna de una matriz X. en caso que el numero se repita varias veces se pueda poner el máximo y mínimo para ese numero.Gracias de antemano por la atención prestada.             

Where is my or Mathcad error? May be I must have not a & b, but a, b & c? See please the attach. Answer please as Prime 6 or pic or pdf  

Is it possible to solve the ODE in attach? Thanks!

 I succeeded calculate multiply:But convert in vector "g" I cant do And quastion: Do mathcad have any method to calculate this?Like:     

I have made an attempt to extract the right set of data (column) from two different tables based upon the selection in the combo boxes, unfortunately it's not working as I want. Attached is my worksheet. Thanks for any help!   

Hello,My company is migrating from Mathcad 15 to Mathcad Prime 9.0. We have a number of Python scripting files that generate Mathcad 15 files by creating the XML data needed to generate and access Mathcad 15 files. In Mathcad Prime 9.0, it looks like the files are not purely XML data. There appears to be some sort of header and footer data, in addition to the XML data. Is there information on what the header and footer data is? Additionally, the Python scripts internal to my company just puts together a string of characters to generate the XML data. Would this work in Mathcad Prime 9.0? I need to convert the files to support Mathcad Prime 9.0, but it doesn't appear to be as straightforward as I thought.   

Hello, The Maximize function does not work properly in the following case - I need to calculate the worst case error in a current measurement circuit where x, y, z, y, v, w are the sources of error (resistors, opamp gain, offsets, temperature dependance coefficients) and a, b are the current and the temperature which I would like to be parameters so that I can plot later the worst error versus current and temperature. The Maximize function gives the correct answer - all variables saturated at their maximums only for CTOL=10^-9 - this is completely strange and unacceptable behavior! For CTOL=10^-10 the solution is erroneous and also for any other CTOL up to 10^-21: I guess these Maximize and Minimize functions are really nor working well with somewhat more complex examples which unfortunately are present in the real engineering practice! 

Hello,Why do I have 2 different values ​​when calculating the symbolic and numerical value for the same integral like below example? Symbolic calculation:   Numeric calculation:   Symbolic calculation first then numeric calculation:

HiWhen I have a collapsible area followed by a page break and I close the area,empty pages remain above the page break (see attached file with an example).I didn't have this problem with Mathcad 15. In addition with Mathcad 15 I was able to set page breaks inside a collapsible area, which is veryhandy option when the collapsible area is relatively large. To my understanding naming of areas is also missing from Prime... Any ideas how to solve these problems? Thanks.

Hi,i have a new laptop to work on mathcad but i can't connect to my user because i have to enter my license when i am hitting enter is says license is used how can i still connect to my user?  

Hello, why Mathcad does not find the maximum for this simple problem - it should be when x=1, y=1 and z=1 - in total f=2. For some reason x and y are kept to 0 even when the 0 is excluded from the range of search for x and y:   Thanks!