Mathcad

Convert the values in the following matrix:     so that they are in ascending order thusly:     Thanks for anyhelp provided!   Dick.....

As a scientist who started with a slide rule, graduated to an HP calculator with RPN, and entered the world of computer math with Mathcad 3 way back when, I consider myself a master of obsolete software. I now serve Russian students as a MOOC group leader/advocate.  There's no money in this because MOOCs are free. I favor the edX Moocs, but sample the complete spectrum.For the physical sciences it is obvious that high school students wanting to do college work will have to make a quick shift to a computer based math program like Mathcad and give up the hand-held graphing calculator.  But it's still required for the SATs and AP tests.  Furthermore, the MOOCs don't make selection of a computer math program easy.  Statisticians push R, MIT favors Python, others favor MATLAB.  No one seems to be pushing Mathcad.PTC needs to get Mathcad Express into the high schools.  We also need to know how Mathcad fits in with robotics languages and 3-D printing.  This

Hello,I am using M14, M020. Yesterday I run into a strange problem.I opened a file which had previously been fine, and received an error: "Warning: an unrecoverable read error has occurred. 3 regions could not be read from this document.” I clicked ok, and it popped up again and again with different number of regions until finally it opened. I asked a coworker to try opening the file. They did with no problem (same version of mathcad). They saved a copy of the file and I tried opening that, same errors.I tried opening some other files which I knew were fine and got the same error on a few sheets. I then closed everything and restarted my computer. I tried opening those files again and it worked with no errors. Everything is fine right? No, this is where it gets interesting.I tried opening another file which had previously opened with no problems when I was testing a number of sheets. Now, this one file (and only this file from what I can tell) gives me the same errors. I sent the file

Hello folks,I have here a problem with the Minimize function. MC claims that a variable is not defined although it is.Has anybody a clue where I went wrong?Thanks in advanceRaikoP.S.I'm using MC 15 on a 64 bit Win 7 machine.P.P.S.I know that the equation sigma is lengthy 😉 in it's definition but in order not to get lost in the many nagle definitions I decided to write each and every into the function.

Hello, Thanks in advance.

I see one new in 3D Surface in Mathcad Prime 2.0 vs MathCAD 2.51 - Mathcad 15 - see the picture.Do you know more!?

Hello, Is there a way to make the axes equal in a contour plot? I'd like to plot some data as a contour plot but the kept the scales equal so it is easy to interpret.Is this possible?ThanksGeorge

I was working on a problem in another discussion and I noticed something strange about pdesolve: it appears to assume a boundary condition.The figure below shows the same equation for a fixed bed reactor solved with two sets of boundary conditions. Because the equation is second order in x, there should be two b.c. on x. The solution on the right for c2 only has one, yet the results are nearly identical to the c solution on the left.If I change the outlet derivative b.c. for the c system, the results do change. This implies that the second boundary condition is active if supplied.Also, I have changed the systems so that the first b.c. for both is merely the concentration at x=0. Both systems get solutions that are nearly identical again.Can anyone confirm my deduction that pdesolve is assuming a missing b.c.?

I have been building a worksheet for weeks now. I opened my document today and only 5 of my 27 pages remain. What does remain has to have the "F9" button pressed to calculate. It doesn't normally require that. It opens with everything calculated typically. I was able to open a previous version of the document that was from 4 days ago, but I have lost 2 pages of calculations unless I am able to recover the lost pages somehow. I saved the document and it shows to have saved yesterday right before I shut my computer down for the night. Has anyone ever had this problem before? Is there a solution?

Hello, in the attached sheet, please scroll down the the blue arrow. when i key in the values insdie the matrix, it draws the sketch and does the calculation. Howerver when i have some of these values inside matrix calculated to save myself from inputing them, i get an error message. Not sure why. Thanks!

I have attached what I have so far. At the bottom I have come to the point where I want to solve for x with a given Ka. I am stuck on this one.

I have been building a worksheet for weeks now. I opened my document today and only 5 of my 27 pages remain. What does remain has to have the "F9" button pressed to calculate. It doesn't normally require that. It opens with everything calculated typically. I was able to open a previous version of the document that was from 4 days ago, but I have lost 2 pages of calculations unless I am able to recover the lost pages somehow. I saved the document and it shows to have saved yesterday right before I shut my computer down for the night. Has anyone ever had this problem before? Is there a solution?

Hello eveyone..Can someone please help me of solving this problem by using Odesolve.I have to solve numerically the dimensionless mathematical model of unsteady pipe reactor where the reaction takes place the first order.Best regards, MilicaP.S. Sorry for bad English

I have just brought a user defined function 'vec' into Prime which takes a single argument and converts to a vector i.e. a range variable. However, I am having an issue typing a range inside pre-definedbrackets.In Prime this does not seem achievable.I must be missing something here!!!

Hello, Everyone. Thanks in advance for your time and help. Best Regards.

Hello, Everyone. Thanks in advance for your time and help. Best Regards.

My company has recently gone over to Mathcad Prime due to most of our employees only needing to do basic calculations but I tend to need to use it for a wider range of uses but I still need to be using the same version as everyone elseAt present I am working on a wave loading worksheet and need to integrate between two points to obtain the force on an object but I keep getting a message saying that it can not converge (even though it can solve the parts of the integration individually)Naturally I tried to see what options I had and I noticed that I had the multithreading enabled so I thought I'd turn that off and now it can solve the worksheet. Then tried turning it on again and it couldnt solve the equation, then on and again it solved itMy question is what is going on with the multithreading and how it affects what it does when it integrates an expression? I know multithreading allows use of more of the computers cores and lets multiple equations be solved at once but it also seems t

I have the problem that I would like to use a function with a set of values which are in an array. For example measured values. My problem is that inside the function is a multiplication, so the vector is multiplicated with another vector. But I do not want this, I just want mathcad to take each value and to give out a vector with the results for each value in the input vector. This works if a range is defined but not with a vector. I understand that there is a matrix multiplication, but is there no way to tell mathcad what I want to do? Here is an example:

I'm new to MathCAD(using MathCAD15). I'm trying to write a program that iterates through a set of data to locate the falling edge of a trip signal. The data set I am working with has thousands of lines where the voltage drops from arround 2.5v to around zero at the time a machine trips offline. I wrote a silplified program with only 10 datapoints as a baby step tward my goal. I am getting an error that doesnt make sense to me. "This value must be a Matrix of scalar elements"See the attached program, any help is appriciated.

Useful documents collected from for the forum.EDIT (WE): The papers were written by Stuart Bruff back in 2011. I add a printout of both merged into one pdf for those not being able to open Mathcad files.

Hello, Everyone. Thanks in advance for your time and help. Best Regards.

Most of my 14/15 files failed conversion. The conversion log only says "Conversion failed and Conversion aborted". Why is this?

I have the following diffusion problem form "Mathcad for Engineers" Adidharma et al. I have worked through several ODE examples successfully, however when working through the attached worksheet I receive the following errors, worksheet is attached. I have the following questions: 1)When setting up the function the derivative notation of d/dx or d/dt is allowed is this also allowed in the PDE solver? 2)In the book on Mathcad online it mentions that PDE Boundary Conditions are required to use "CRT F7" to setup a derivative, however when I do this I still have an error?3)The online book also mentions that boundary conditions need to have literal subscripts using ".", I have tried entering the function "f" and then the literal subscipt "." followed by "x" however, this did not work?Please advise what I am doing wrong. I have Mathcad version14. Thank you in advance. Sincerely,Walter

Hello,please scroll down in my attached sheet to the big red arrow where the error is . Unless i did something wrong, this method sometines works and some times i get an error . Not sure what the issue is. All variables are defined or calculated right above the equation. Thanks!

Hello!I'm currently working on making a report using Mathcad Prime 3.0 and would like to display some of the results from my calculations in the beginning of the document. Is there a way to do this other than using global definitions?The reason that I don't want to use the global definitions is that they can't be changed like functions or normal variables. Other than being a hassle it is plain impossible the way I have set up my current document.There is a simple example in the attached file.