Mathcad

Hi guys, I'm having a bit of trouble with this solution. I'm trying to solve a problem where in essence I'm using the RK Equation of state to find two volumes, then using the Trapezoidal Rule to "integrate" without calling an integral function. I'll attach pictures and my current Mathcad file so you can follow along with my commentary.In the first picture I've defined the function using the Boolean operator to find by initial and final volumes. If you're using my .xmcd file be careful, I sometimes use "[" subscripts and sometimes I use p.1 instead -- click the definition to check.In the second picture I've defined the RK equation of state as an actual function of v and I have the trapezoidal rule as a comment. I'm showing that my h = final - initial, my interval is starting from v0 and going by my step size of h/2n to my final volume. I then evaluate the RK function at the initial volume, the final volume, and sum the evaluation of p over the interval v to get the 3 terms needed for tr

Greeting, everyoneWith the first approach, Mathcad cannot return to a solution. But the second one using Polyroots works. And when I check with the eigenvalues derived from above, the determinant is not equal to 0, why?Thank you for your time.BestShawn

Hi MathCAD Community,To start I will try and give some background to the problem:I have imported some data points that represent two edge curves of a surface in Creo. Using Matricies I can rotate these data points by a given angle made up of Yaw and Pitch. I then project these rotated data points to the zero plane using a projection Matrix. Next I fit a function through the two sets of transformed data and using integrals I calculate the area between these curves.Now that I have worked out how to do this by specifying the rotation angle I want to iterate through 180 degrees of rotation in Yaw and Pitch to find the orientation that provides the smallest area between the curves.My problem is when I go to find the potential intersection points of the two curves (for defining integral limits) I use a solve block, which cannot be implemented within a for loop for iterating through angles...If anyone could help me find a solution to this ASAP it would be greatly appreciated. I have attached

In MathCad 14 it was no problem using solve combined with Kirchoff laws on a circuit to figure out different current, but in MathCad Prime it doesn't work when i type the same things in solve block.What am I doing wrong? MathCad 14 on the left and Prime on the right

So I finally had to get a new PC and move to Windows 7.  So I lost my MathCad 11 installed on XP.  I popped in the disk and after installing I'm told that PTC was "nice" enough to not let you activate the old license anymore.  However, when I download the new Prime it doesn't recognize my old MathCad 11 files.  I never upgraded because it had all the functionality I needed, but now it seems my files might as well be written in Sanskrit.Is there any way to continue using these files?  Or am I stuck with now figuring out how to rewrite them in Excel? (because I'm not about to trust PTC to not do the same thing again in the future and leave me high and dry)

This study shows how to create animated clips illustrating various thermal processes.Pictures of the study:Fig. 12.1. Interactive open network calculation process of steam expansion in the turbine (http://twt.mpei.ac.ru/MCS/worksheets/PTU/h-s-ExpEng.xmcd)Fig. 12.2. Creating of animation in Mathcad 15Fig. 12.3. Mathcad animation framesFig. 12.4. Turbine steam expansion animation at PTC Community website ( Video Link : 4429)Fig. 12.5. Steam turbine cycle work animation ( Video Link : 1683)Fig. 12.6. Otto cycle work animation ( Video Link : 1680)Fig. 12.7. Diesel cycle work animation ( Video Link : 1701)Fig. 12.8. Animation as exe.file    Fig. 12.9. Scanning with animation of a function created using the properties of substances Fig. 12.10 Scanning of the created function: spline oscillation  Fig. 12.11 Scanning of the created function: everything is OK (see this online calculation - http://twt.mpei.ac.ru/MCS/Worksheets/Hydro/La-De-Re.xmcd)Fig. 12.12 Frame of the animation

Hi everyone,I would like to know if there's a way to use a reference within a for loop in Mathcad 15. The subject has already been discussed here but the proposed solution wasn't really working well and gets too complicated with a bigger worksheet. Nevertheless, the principle is there.To schematize, i'm trying to create a worksheet like this : for i from 1 to n * define variables used in reference calculation * call reference * get results(i) from reference next i show results I hope this is technically possible, so please let me know if you know an advanced version of the pre-cited method.Regards,Antoine

Hello all,We are learning shear force and moments and we are drawing them by hand. I understand all the calculations and how to draw shear force and bending moment diagrams but the bonus question on our assignment is to plot the diagram below in Mathcad using x-y graphs. If someone could help me with it I would really appreciate it. We Wont be taught how to do it in Mathcad but i am sure it would be useful to know.

In order to apply the classical Van der Walls Critical Isotherm Conditions to a  Carnahan-Staling based EOS, I make use of the derivative operators within a solve block.  I found discrepancy between the derivative evaluated by using the symbolic derivative and the expanded derivative ( calculated symbolically ). Furthermore the solve block does not converge with the symbolic derivatives, while it does ( "better" ) with the expanded derivative.

Hi !I'm trying to create a simple programming sheet but I cant solve this error "This Value must be a scalar".If anyone could help me, it will be great !

Corrupted Mathcad file with the "busy excel" Error.

См. рецензии в аттач.  д.т.н., профессор Никульчев Е.В. – проректор по научной работе, зав. кафедрой программных систем НОУ "Московский технологический институт"к.т.н., с.н.с. Гиглавый А.В. – заместитель директора ГБОУ "Лицей №1533 (информационных технологий)" г. Москвы, отличник народного просвещения 

Hello, how I can shade area under graph in Mathcad Prime 3.1?

I'm giving this old problem a shot with the pdesolve built-in function. Yes, this problem has an analytical solution, and most likely, it can be solved using dimensional arrays and finite differences too. I might be missing something obvious as to how I have set it up. Please, take a look. Any feedback is greatly appreciated. Thanks,

Good morning,I have a quick question regarding units. I am new using mathcad. This might be a silly questions but i am trying to input the units at the end of a calculation such as wind pressure in psf, but when i do it changes automatically to Pa^1*psf. that's not what i want. how can i change this?I am attaching the file. first page, last equation. It doesnt have any units at this moments, but as soon as i double click on the unit section and enter psf of lb/ft^2 is also adds Pa^-1.Thanks.Ernesto CostaEN Engineering.

Hello All,My requirement is simple I want to compare two numbers and I want the maximum value in return irrespective of its sign. This is how I tried in Excel if (abs(A)>abs(b),A,B) and it worked well.I tried the same function in Prime3.1 and it crashes every single time I used it. One more thing what I've observed is, the IF statement is working fine when I haven't used Abs function or Determinant operator  in it. The real problem arrives only when I include Abs function in it.Someone could please help me in resolving this issue.Thanks in advance.Regards,Ashok

HiNot sure why I am get the incorrect units and the problem cascades down work sheet to produce incompatible units.Thanks in advance.

Sir can u please tell me  how to proceed this step in mathcad prime 3.1

I can use the Maximize function for a finding only a one point.And I must use the root function (not Maximize) for the creating f function.Can you help me to use only the Minimize function here.The problem: root(y(x), x) but Maximize(y, x)See the picture and the Mathcad-sheet with cloud functions in attach.

I'm trying to reinstall Mathcad Prime 2.0 on Windows 10. When the program tries to validate the user name and password it fails. Has anybody experienced this issue and been able to resolve it?

Hey guys,I am a grad student that is brand new to mathcad.  I've tried looking at other solutions, but unfortunately, I just can not find what I am doing wrong.  I am looking at an example problem that was  done in class and am trying to recreate it (a pic is attached).  As far as I can tell, I have exactly the same program this far (my sheet is attached), but mine gives an error of "this variable is undefined." If someone could check it over and point out what I am doing wrong, I would really appreciate it!Thanks, Caitlin

To community:The attached worksheet shows two programs.The one on the left shows one way of repeating a calculation that works and accomplishes what it is supposed to do.The one on the right is an attempt to0 do the same by iterating the calculations but only goes into a recursive mode.Would like help in the proper programming procedure.Thanks for any help