Mathcad

i better do math than talk in english.D:=42L:=41C:=5C:=(D-d)/Lcan i get the value of "d"?(yes, can be done even mentally, but how you do it in mathcad?)

All,I am trying to numerically solve a transient 2D heat equation in a square plate that is 1m^2. With boundary conditions (bottom and left wall at 200C/top and left wall at 0C) and initial condition of T0=21C using MathCAD Prime (3.0).Can someone guide me to how and approach such a problem on MathCAD. I have found that multigrid and numol functions are the ian ones used but multigrid is for 1D however.ThanksAhmed Jalal

Is Mathcad 14 compatible with Windows 8.1? I tried installinf 14 on my new pc. I got a license from PTC but Mathcad doesn't run.Dave Fleming

Hi, everyone,Suppose I have a 13 by 13 matrix, (shown in attachment), what I want to do is to extract its 4th-5th, 7th, 9th-10th rows and columns to create a 5 by 5 matrix.So far I only know that the function "submatrix" works with extracting consecutive rows and columns, so how to extract non consecutive rows and columns?Looking forward to hearing from you,Thank you very muchBest Shawn

Hey. So in my Computer Methods class we have to determine a least squares quadratic fit from given data points. I basically just followed an example he had in the book. I can get the right answers by hand but for some reason my mathcad values aren't evaluating correctly. The f(xi) values are supposed to be very similar if not the same as the yi values. That way the regression line fits with the yi plotted values. Someone please help? Thanks.

Hello,I've been trying to find a way to plot the data I have with the proper scaling of the x & y axis. The information I have is from test data, where I have calculated the gibbs energy of the test conditions. I have a set of data of particle measurements that are given in size ranges, but I'm not able to get the data properly graphed with the scaling I'm needing.The information is in the attached file.

Dr. Valery Ochkov visited PTC headquarters today. He traveled all the way from Russia to speak with the Mathcad business unit. I was able to have lunch with Dr. Ochkov and discuss his ideas on how to better share worksheets within the community.He also came bearing gifts. Here's the Mathcad clock he gave me...it is now hanging in my office.Thanks Valery, it was a pleasure to finally meet you in person.-Dan

I was not able to see today (03.20.2015) solar eclipse.But I created it himself with Mathcad Video Link : 5868 Visit please Three (and more)-body problem with Mathcad animation

In the attached Mathcad Prime 3.1! worksheet I am attempting to graph slope vs. distance on a beam. On the vertical axis is slope. How do I specify angle as the unit type?

Hello,Please scroll down to page 3 where the red arrow is. i have placed my question there.How can i report the positive roots only and place them in a vector form ?

Thanks! Tom

Hello all. I'm new to Matcad and i am trying to make simple logistic map.And I get an error - 'value must be scalar or matrix'.Could u give me few advises to solve it, or show how to write down correct formula?Thank you.

Hi can someone please show me how to do a graph on mathcad for this question? all help greatly appreciated. Sorry I posted it on wrong thread earlier.

Hi can someone please show me how to do a graph on mathcad for this question? all help greatly appreciated.

With http:// no problem.

Hallo,Habe gerade versucht einen Online Video Lernkurs auf zu rufen.Es kommt immer die Meldung "No playable sources found", obwohl ich den Adobe Flashplayer installiert habe.Vielen Dank im vorausVolker Jacobs

How can I define a range variable when the variables are not necessarily in defined pattern? I have got round the issue in the attached using a lookup expression from a table but can I not define d as a comma separated list? d:= 12,16,20,24,30,36 ? to simplify the expression?

Hi!I'm a bit new to the symbolic "abilities" in Mathcad 14. Is it possible to define something symbolic?for example:I would like to define:Ma:= P*X - F*D and Mb:=P*X and use the definitions in further symbolic calculations without have errors such as "this variabl is undefined" popping up.best regards

Hi,I am using R to analyze some thermal conductivity data, and I also have some related functions in MathCad 15. Does anyone know of a way to access or import MathCad into R?I know it is possible to do it with MatLab: there is a package written in R for it.I believe that many R users use C++ to write the functions that I have in MathCad: and it's easy to import C++ into R. But I don't know C++.I have a lot of code in R, and it does what I need in general, so I want to use it as my main package for this application. I'm just hoping to find a way to re-use what i've done in MathCad.I asked the same question on StackExchange and so far nobody has come back and said it's possible.I suspect that it's not possible, and that i will have to re-type/formulate my MathCad code into C++ for use in R.Thanks,Alan

i know it's very basic but i cannot find an answer by myself:i cannot put ":=" after second value (r2).Thanks..

Hey everyone 🙂So, I'm working on a system of equations, in which we have some unknown variables and some variables which are known (known in the sense that they can be anything that is chosen later on, they do not have any set numerical value yet).I'm new to MathCad. How exactly do I go about using variables which have no actual numeral value yet? They are simply symbols that should be used when performing the necessary calculations to show how they relate to the unknown variables in the system. I haven't exactly been able to find an answer in the help documents I tried to search in. All they did show was how to define variables that either had numerical values, or stood in relation to some other variables. I just need to be able to name some identities that can be moved around as if they were just any type of number.Thank you all 🙂

I am trying to understand the Hasofer-Lind safety index method but I have found no references with a complete but simple example illustrating this method. Has anyone on the discussion forum attempted this and if so would they be willing to upload their example template so that I can examine what they have done so that I understand it. Unfortunately all the references I have describe lay down complicated math which doesn't give one an intuitive feel for this important concept which is often used in quantitative risk assessments.Thanking you in advance, Mark Buckton.

Thought I would start a forum post to alert anybody, though it might be slight amount of people, that the Prime 3.0 will crash when run alongside EVGA onscreen display. This is the closest I could track the crashing errors too. Turned off EVGA and no errors associated with crashing. Most of the crashes happened when I dragged the equations around on the sheet.Simple enough to turn off EVGA, but thought I would report it to the forums and will send in error report details.

Hello everyone!I have a problem with symbolic calculus (nothing special), it relates to a project of mine, and regards the calculation of the response to the sawtooth of a system with a known transfer function. As it is making me lose a lot of time, I ask help to a mathematician experienced on the subject and that he can fix it. I have attached the file containing the worksheet.Thank you very much.

Hello everyone! I've a little problem with variables, namely: is it possible to delete a style name once defined and used, but no more useful and problematical? I think it isn't. Thank you in advance.