Mathcad

Hello, I am new to mathcad and am getting the error "unable to form derivative matrix" when using OdeSolve. I think i may not be able to use OdeSolve inline like I am doing. Can anyone confirm this. And what should I do instead? I am attaching screenshots below. I appreciate your help

Hello, dear community!I am trying to find the problem with the resolution of these equations. They correspond to mass balances in CSTRs and a charge balance to determine pH. See attached spreadsheet.Best Regards,Baltasar

HiI'm calculating (programming) with nested arrays (MC15). I do two for loops, where the first is fixed in size, but the one inside this is dependent on the size of the nested parts in the array I use for the calculation. My problem is, that when I do this dependent sizing, I seems to work fine as long as the nested parts get larger, but if they are smaller than the largest nested part that have been calculated previously, the loop keeps this size, and fills in the "cells" which doesn't match the smaller part with the value from the larger part.I hope this not a too cryptic explanation of my problem. I've attached and example of what I'm trying to explain.

HiI have attached an mcdx file. I don't understand what the issue is when lambda*c is raised to the power of e. Please let me know a work around for this problem.Sriprakash

Hi everybody,I need some help with Mathcad, from some experienced users in solving a little math problem:Let\s assume a parameter which varies inside an interval and I need to to find the exact value for which a function of that parameter becomes minimum, let's say: - Variable x is in between 10..20, taking all values with 3 decimals- Based on the variable x, I'm calculating an error function which is supposed to be in between an interval  -2<f(x)<2- I need the value of x for which my function f(x) satisfies the conditions described aboveThe above described problem is for a single variable function, but I would also need to do the same thing when I have a few initial parameters: x,y, z, each of them with a few decimals and with their own intervals of variations, and a function f(x,y,z) which again should satisfy a condition like -2<f(x,y,z)<2. So in conclusion, what I need is the Mathcad syntax for defining such variables (all numbers in a range with a certain precisio

At the last event "PTC LiveWorx Europe 2015" in November of 2015 it was presented a roadmap for the development of Mathcad Prime 4.0 and some future steps (themes) for Prime direction. Let's see what updates are planned for version 4.0 (now the release of version 4.0 is scheduled for the 4th quarter of 2016 year) and is scheduled for subsequent releases after 4.0. PDF "PTC Mathcad Roadmap_2015" can be found in attachment.Here is a list of major improvements for Prime 4.0:Plot enhancements (embed 3rd party tool);Mathcad as an OLE container;Worksheet content protection (area protection/area locking);Copy multiple regions to clipboard;Equation wrapping.1. Plot enhancements: embed 3rd party tool to match PTC Mathcad 15.0 plots on first release.2. Mathcad as an OLE container: ability to embed applications as OLE objects within the worksheet.3. Content Protection: area protection/locking.4. Improved external app interoperability: copy multiple regions to MS Word.5. Equation wrapping: allow a

How to create 3-d (vertical) line thru the center of gravity?How can we more simple create the 1-st and 2-d (horisontal) lines?See please the Mathcad 15 sheet in attach. Thanks!

HiAttached is an mcdx file. I have an issue with the units. I'm expecting the units for fctm to be in MPa. But Mathcad does not seem to be in agreement. If I remove the 2/3 from the equation then the units are OK. Kindly help.Sriprakash

Hello!I'm new to fluid problems and was wondering of someone could point me in the right direction.My problem is essentially a syringe. If the pluger is pulled by a force (300kN) how much damping will it experience? Initially the plunger is at h = 0 and ends at h = 30 mm when the plunger is out of the cylinder. D1 and D2 = diameters

How does one restrict the daily bulletins so that one only gets them for the software one has.In my case that means Mathcad 15 only.Others might run several PTC software packages and therefore would want alerts for each.How do we filter out alerts for software we don't have please?

Mathcad 14.0 using OLE engine between Mathcad and say open office or Libre office calc module?

   Hello Everyone.  From :  So the question is : Plotting one more point of intersection ? ( Re( e^(1i*x) - x^-1i ) and 0*x )       Thanks in advance for your time and help.             Best Regards.

HelloI'm trying to make a simple program for road pavement design, in which the result of the first computation step is used for the second step, second to third, thir to fourth and so on.As attached is a sheet which shows what the program should do for 4 layered system,but I would like to make the program to work for n-layers.My tries are probably far from a working solution, so therefore I ask for help.

Hi everyone,I already asked a related question in this old thread.For a random (vibration) signal there are two important statistical values: the peak rate and the zero up crossing frequency.  The first one I was able to compute using a the function localmax provided in the "Data Analysis Extension Pack".  Now I would also need the zero up crossing frequency, that is the number of time the signal crosses the X-axis going up. To clarify here is an image from Wirsching, Random Vibration.  The zero up crossing in the example are highlighted in yellow.Before I start writing a simple iterative program like for i=0 to npoints  if x(i) <0 and x(i+1) >0 then     zup=zup+1  endifnext i... I just wanted to ask if someone in the community knows some elegant and straightforward way, similar to the "localmax" function.  That function has the advantage of providing the ability to give a window width (for noisy signals).Thanks a lotRegardsClaudi

Hi!   I am working on a project regarding image analysis (object counting, area dimensions, etc..) Using 'canny edge detector' I isolate edges and fill object or background which interests me. I have tried using 'floodfill algorithm' from here:  https://community.ptc.com/t5/PTC-Mathcad/Objects-Counting/td-p/283337  but with bigger matrix, I have encountered 'not enough memory' issue.   So I wrote my own 'scanline floodfill algorythm'. Algorithm is colouring next pixels until it reaches pixel with value '1', then depending on direction in which it colours, and free space, it leaves seed with value 255(x+1) or 250(x-1). Then it checks the location of seeds and continues with colouring starting from this seed. (image is stripy because when writing, it was easier for me to find the loop which leaved UNcolored pixels) While I was writing my algorythm, it looked promising in terms of performance, but in final form it is very slow. I have no experience in programming

Hey guys,wish you all a happy new jear.I would have another short question maybe a guy can help me with this expression:Can anyone see my failure?Thx 😃

Hi Guys,I have another 2nd moment issue I am struggling with.This is the overall task:So far I have calculated the area, centroid and second moments for the waterplane as follows:andWhat I then struggle with is combining the second moments of the two shapes. I am of the belief that I can get the overall second moment of the entire waterplane by adding the two individual second moments about centroids i.e. JoL = JL (for the ship) + JL (for the appendage)I have JL for the ship and I believe to get JL for the appendage I need to convert the second moment about the aft perpendicular to the centroid which I thought could be done as follows:But I am obviously not getting the answer right for JL. I have also not even got to thinking how the overall JT value is obtainable?Any help warmly welcomed as always.Andy

Imagine a plain (x,y) with 3 points (x1,y1), (x2,y2), (x3,y3) at it, not positioned in a line. At each of the 3 points is fixed a straight wire with given length L1, L2, L3, protruding to z-space. Find the spatial coordinates of the point (x,y,z), where the 3 ends of the wires can find together.From Wolfgang Issel using MC14 on Windows 7

have a problem in solving a numerical double integration, two variables dependent on each other, the boundary for one of them is known, but the other is not.tried to sole it in mathcad but i think that there is an error in inputs, or how to put it in mathcad in the right manner

I have a client who is using Prime 3.1 and I would like to share my Prime 4.0 file with them. I cannot see a "save as legacy" option and cutting and pasting doesn'r seem to work either.

How do I generate a color-coded contour plot with three columns of tabulated data in Mathcad Prime 4? I've seen articles on how to plot a z-axis with the x- and y-axes defined as functions, but I don't want to do that. I want to take my measured and tabulated x, y, and z data and put it in a contour plot. Thanks in advance.

Are its bug?

hello,I installed MathCAD Prime 4.0, and my help file is English. I want to display another language help files.It is better that display the help files of English and another language at the same time.Tips:1.MathCAD Prime 4.0 help files are based on the technology of Tomcat, it means when you open the MathCAD Prime 4.0 help, you can paste the web address "http://127.0.0.1:64871/index.jspx" to web broswer application, it will display the local language help automatically.2.The installed help file pack is in "C:\Program Files\PTC\Mathcad Prime 4.0\Help\project\WEB-INF\volume", you can see what kind of lang pack installed.3.The reason i want to different help files is i want to learn more.How to change the web address parameters in address bar of web browser application, that i can read different help files at same time?

I'm aware that Mathcad Prime can communicate with Creo parametric, although I have tried it yet.  I'm wondering how far I can take this.  If I use Mathcad to parametrically build a component in Creo, can I also automatically apply boundary conditions to that model for use in Creo Simulate FEA?  I'd really only need pressures on areas and some displacement constraints.  (I'm not set up to experiment myself yet, so I'm asking to get some background on what's possible - to justify getting setup and then spending time streamlining the design process.)Thanks.

Hello,I am currently running Mathcad Prime 3.1 non-subscription.  I am considering the upgrade to Prime 4.0.1. In your opinion are the updates worth the update cost.  It does not appear to me that there is much in the way of updates this time.  2. What are the advantages of using the subscription set up versus buying the full update?  What does subscription get me?  I am only aware of this update in the last year or so.  My structural analysis program I have is subscription based and they send out updates multiple times per year and many are substantial additional functions.  3. Will the Roark's worksheets that are supposed to come out work with Prime 3.1? Just curious about other opinions.