Mathcad

  why won't this work?  i am trying to get it to iterate so i can have multiple VR outputs till the VR's start to be the same value i can't even get this thing going right.   The problem i am trying to solve is finding V source using the iterative method. 

Hey all,   I'm trying to solve equations for concentration which change over space (x) and time (t) I never work with PDE, usually only ODE. So of course it does not give results like i want. Can you please help?   Thanks

I am new to Mathcad and having issues getting the program to solve for a variable. I was able to get my first equation to work, but when I tried plugging that value into the second equation I started having issues. The program would not let me plug in my value and solve for D. What am I doing wrong?

Hello everyone,   I'm trying to program a 2D finite difference in time domain problem. However, I can't run the program, since the units do not seem to match. Has anyone an idea of how to disable these units or maybe could tell me what did I do wrong ? Because I don't know if I did mistakes in my program or if units stand as the only problem.   Thanks in advance !   Cyril

Hello. I'm sorry if this question is asked before, but I am having a hard time finding examples for something I expect to be basic function of Mathcad. (using Mathcad Prime 5). I see many basic examples of defining, solving for symbols, but the examples are just one-line,one-variable solutions that just write a equation, solve in one line and stop there.   I'm trying to setup some equations with symbols only (variables not previously defined), then solve for one of the variables, then plug in this solved variable into other equations to solve.   Example, I'm trying to use the slope-deflection method to solve for reactions on a beam. If I predefine almost all the variables, then no problem... if I try to do this symbolically, it doesn't work.   For examples, let's say  I do a2(x) := 50mm + 450mm - x   Now I want to say b2 = 1000mm - a2 << a2 having the symbolic x & Mathcad does not like this. ... Another example, I have defined Mba (E, I, L1, Thetab) :

Can anyone figure out why these two values are not compatible?

Hello, I need help converting over a simple file so i can do my homework. i have been having issues with the converter and i have no idea what i need to update in order to get my mathcad (Mathcad prme 5.0.0.0) to convert this file. Any help is appreciated

Hi All, I have created, for a long time, a file that has grown more and more. Currently the size is 19MB. For some time, when I save it, I find the attached deadly message ...... If I save the file it will reset 0MB ..... How to determine the cause? Thank you.

Dear, I'm new with Mathcad and do not know how to solve a 4th order differential equation with boundary condition, see Maple Solution 

Hello,   I am trying to program a system of 2D finite differences in time domain. I need to split the program into several parts. The cells on the edges of my table are defined by others equations since they carry boundary conditions. My problem is the following :  I use a double "for" loop in order to calculate the value of the temperature in the central cells. However, when I run the program, calculation has been made only for my jmax-1 row, I don't understand why I only have value in that row. Another problem is that I can't manage to calculate temperature in a specific cell by adding the value of a neighbor cell.   If anyone has an idea of what's happeing, you're are more than welcome.   Thanks in advance

To all  I am doing my 1st step with the montecarlo() function in mcad 15. I copied the example and put my own function and it seems to work fine. Does anyone know if there is a way of getting/creating the “enveloping” ellipse one often sees on a Monte Carlo plot? I attached one on which I drew the ellipse   I think the length of the minor and major axis have a meaning (in the Mont Carlo world) byut can’t quite remember what it is!

Hello all!I have uploaded a file which was working fine in Mathcad 7. It uses Minerr function to solve Id which is an iterative function. But it is not working on Mathcad 14. I have more of similar files with lots of work. All earlier files are working except the minerr function in them. Is there any change how minerr is handeled in Mathcad 14 than it was done in Mathcad 7?Please help to make it work again.@

It seems there is no formating possibility of pages in MP 5.0. Is it still not possible to use your own page numbering system? Like starting with a pagenumber you want, in the configuration you want (i.e. pagina 1 van 2 - in dutch). Or choose your own page margins? Or have a framework (or two). The "old" Mathcad 15 his it all for decades. Can someone tell me where it is hidden in MP 5.0, since it should be lined up with features of M15.    

Video Link : 5837 Kepler сlock are a traditional clock with arrows and dial. The difference is that a Kepler clock face is not a circle but an ellipse with the numbers 1, 2, 3 ... 12 (I, II, III ... XII). Arrows (hour, minute and second) move in a circle uneven.The length of the arrows also change as they move. Arrowheads describe an elliptical trajectory. Additionally on the dial displays sector, covering two adjacent hours between which at any given time is second hand. This sector is changing its location and shape of every five seconds, but its area remains constant according to Kepler's second law. These watches can hang in classrooms mathematics, planetariums, observatories, museums ...More about Kepler Clock Case 7: Earth and Satellite Or Kepler's clock

Hi all,   I'm working on on a sheet which calculates section forces and deflections in a cantilever beam based on a function for the load. There's multiple integrals involved: define q(z) V(z) = integrate q(z) over z = 0...z M(z) = integrate V(z) u(z) = double integration of M(z) In my sheet this sort of looks as follows, where q is a ranged function, see the top left graph:     Steps 2 and 3 are easy for MathCAD to compute, but step 4 (bottom right graph) puts my computer in an endless loop of calculation.  MathCAD 15 also has it hard, but does come to a result after a while, where MathCAD Prime 4 is still calculating after about an hour.     I can understand that multiple integrations can be cumbersome for my computer, but in my opinion, this is what MathCAD should be good at? Am I doing something wrong somewhere, are there ways to get the last step working, or am I just asking too much of the software?   Thanks in advance for

Hi, I am fairly new to Mathcad Prime, but having used 11,13 and 14 previously.   I have defined some new units, but for some reason Prime 5 is unable to use these user defined units in the evaluation result of a calculation.   Am I doing something wrong, or is it simply not possible?   I have tried both with normal definition and global definition of the unit.

Hello everyone!I am trying how the MAthcad 15 "Compare Worksheets" command works, it is present in Tools. In this regard, I did not find a mention in the guide. So for proof, I created two very similar and very simple worksheets, but I do not understand how the comparison works. For example the constant b has different values and the number of  letters M in the two strings is different but there is no indication about. I enclose a photo of the result. I thank you in advance for your reply. Greetings Francesco Mezzanino.

Hi there,   I am new to Mathcad tool and nowadays preparing a calculation sheet for Cantilever and Deflection Forces Analysis.     Please see attached herein my query with post.   Now at first column there are two cateogries for type of span and against some type of support is given. Respenctively there are three factors (a,b,y) which need to be considered depending upon these 1st and 2nd column's values. In column three, there are two more condition like point A and B as given above. So my query is that how can I or what function do I need to use here to execute the desired output based on these criteria.   I have just starting learning Mathcad so I am wondering if anyone from the communtiy help me to figure out the correct method.   Many Thanks,   Regards

  I have written a for loop code and I want to assign the final answer to a variable that is out side the code so I can use it else where in the program.   I have attached the file. The value returned by k is the final answer  Thanks!

Many years ago as a young(er) engineer I received a memo (from someone who may happen to be a regular contributor here) about the dangers of spreadsheets.  One of the key points was the mathematical limitations of excel - in the memo demonstrated by a Runge-Kutta solution not being accurate.  I have a few questions may be you can help me with:   a.) Have there been any upgrades to Excel in the last decade that corrected such issues?  b.) Does anyone happen to have an example that shows bad excel results vs mathcad/matlab/maple etc. (Limited time for me to attempt to reproduce the R-K at the moment) c.) Any other examples or reasons on why excel is probably not the best choice for engineering calculations? (besides clarity and operation order)   Thanks,

The video Video Link : 5751 About this problem Ode solve and if - new task

Why isn't writetext working in programs?      

Hi!I have written a function i call "STACK(A)" that takes a column vector, and loops through it and stacks all non zero elements in a new column vector.   My problem is the output, the new column vector is displayed as: Any suggestions on how to get a new normal column vector like the "IntendedOutput" Regards 😄 Sigurd 

I'm trying to solve a simple differential equation dCO2L but it does not work with ode solver I'm curios why.... Need help!

Hallo Everybody,   My name is Yudi. I am a student and I newbie using Mathcad Prime software. I have a problem so I hope somebody can give me a solution. I using this software for analysis RC beam and after I get the result, I compare with experiment data. The problem is I can not transfer the result in the plot because there is a warning "These array elements must be scalar. They cannot be vectors or matrices". I have searching in other reference and I try to apply the method but the warning still appears.