Hi, I am trying to solve a system of 3 equation by iteration 'n'. The system of equations is solved over a range 'x'. There is convergence to a solution over a certain part of the range of 'x' but no convergence over the other part. I believe the exponential term in one of the equations is generating a number that is too large for mathcad to handle. Is there any way to get around this problem? Perhaps some reworking of system of equations to modify the exponential term (logarithmic scale)? Or is there another way I could go about solving this system of equations? Thanks, Jon (Please see the attached file)
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System of equations not converging due to exponential term
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Limiting functions
Hi all,
I am goint to make xy-plots of three functions f(x), g(x) and h(x). The function h(x) depends of g(x) which depends of f(x).
I would like to set up for which values of x each function should apply e.g. f(x) for x =A-B, g(x) for x=B-C and h(x) for x=C-D.
How do I do this? Is it easier to put the range on the functions or on the plot?
I am using Mathcad Prime 2.0.
I hope you can help me out.
Thanks in advance.
-Ronnie
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Split too long equation in Mathcad Prime 2.0
Hi
In Mathcad 15 it was possible to split up an equation by CTRL+ENTER so it could fit on a single page but i can't find that option in Prime 2.0..
Hope somebody can help?
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Genfit Function for Data Set
I'm trying to find a decay equation that I can use with the genfit function but can't seem to find anything that fits. I'm try to generate a function of alternating flux density vs incremental permeability for various DC Magnetization levels.
My question is twofold:
How can I generate a function that will fit the data for a single DC magnetization (Hdc) level?
Can I generate a function that will find incremental permeability at any Hdc and any alternating flux density?
I've included a file for review.
Thank you in advance for your help
Sergio Kraljic, Jr.
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Converting Problem PRIME 2.0
Hello,
well the first problem was the registered Mathcad 14, but after deleting that and reworkink regdotnet, the problem remains.
The converter hangs after hitting "include references"...
any ideas?
thanks
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This array index is invalid for this array
hello
I am trying to replicate a relatively simple worksheet from:
http://www.alueurope.eu/talat/lectures/2301ex/ex81.pdf
I get the above mentioned error when typing the infromation about sectorial coordinates on the page 2. I have also attached the worksheet. How come it works for the author of the document but not for me? Is it because it is another version of MathCAD? If so how can I fix it?
Thanks in advance
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Editing original post
It seems that I can edit my own replies to posts, but I can't edit the original post even if it's my own. Is this deliberate? IMHO, it would be better if it cold be edited.
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"save as" causes Mathcad crash
Hello,
the last days I was trying to bring some prior work to test with Prime (The problems are filling other treads). I had to uninstall Mathcad 14 and then re-register ocx for Mathcad 15 - only to tell you the history before the problem began.
Then - in order to test parallelisation into multiple FPU - I tried to run two instances of mathcad at the same time, using the same work sheet, well after this the tragedy began.
Every time I'm trying to save the sheet under another name, Mathcad crashes...
Also when tyring to open a sheet Mathcad crashes. Douple cclicking works however.
any ideas how to heal that?
- is this a license problem
- is there some corrupted trash in the directory
- other..
I tried to reinstall on a SSD but the original path cannot be altered even when directing Mathcad installation to the new one, so I will try to move it..
many thanks
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Mathcad Prime 2.0 Program Error
Hello Everyone when i try to write someting on mathcad prime i always recieve a message like this: "An Unhandled exception occurred on the dispatcher thread. See C:\ProgramData\PTC\Mathcad Prime\Logs\Mathcad Prime_Exception_20120331_182523.log for more information. Prime will attempt to save any modified files and close. Please restart the application." Please help me thanks...
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Problem with Differential equation of the elastic curve (solve block)
For solving this simple differential equation I used ODE solve block , but when it comes to define the solution parameters , I face problem making MATHCAD understand them !!!
I wrote the solution in the attached file and it can be easily solved by hand , but I wonder how MATHCAD does it !
Can someone please check this and solve this simple differential equation for finding the deflection of a beam ?
Thanks in advance.... 
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limit problem in mathcad 15
I use mathcad 15 M020 to quest the limitation of:
(1+2^n+3^n)^(1/n), n-->infinity
and the answer should be 3, but in mathcad it seem can not calculate it.
and I try it on the Prime M010, false too.
Why? and How should I solve this problem?
My pc system is Win7 ultimate.
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Lengthy symbolic equations
I have to evaluate two fairly messy equations,
in terms of several radii and pressures, which I only know symbolically. I have solved these by hand and, as expected, get my sigmas in terms of the radii and pressures. But the expressions are lengthy and I need to use them in other equations. Is there a way I can write expressions which maintain the symbolic placeholders for my varibles?
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Piece-wise model with system of equations
Hello, I am trying to develop a piece-wise model. Normally I would just use a matrix with i+1 and i. In this case however there is a system of equations that needs to be solved for each piece. I was using the 'given' and 'find' operators for the system of equations but I can't figure out how to do integrate this process with a step-wise procedure. Please find attached my file. I solved the first few pieces by hand just to illustrate more clearly what I am trying to do. Thanks!
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System of equations not converging due to exponential term
Hi, I am trying to solve a system of 3 equation by iteration 'n'. The system of equations is solved over a range 'x'. There is convergence to a solution over a certain part of the range of 'x' but no convergence over the other part. I believe the exponential term in one of the equations is generating a number that is too large for mathcad to handle. Is there any way to get around this problem? Perhaps some reworking of system of equations to modify the exponential term (logarithmic scale)? Or is there another way I could go about solving this system of equations? Thanks, Jon (Please see the attached file)
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Colebrook Equation no solution found
Can someone please explain to me why Mathcad Prime 2 cannot find a solution. I did the same in Mathcad 15 and had no problems. If you add units this makes the situation even worse for MC P2 i.e it complains that it cannot resolve the units. Have I overlooked an otherwise obvious detail?
Regards, Mark
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System of ODEs
I came across this sytem of ODEs on a Differential Equations primer website, and am wondering if there is a way to model it in MathCAD (15)?
Thanks!
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Matlab code for Mathcad model
Hope that nobody minds me posting a question related to Matlab, but since it also deals with Mathcad I figured it would be okay. I am working back and forth between Mathcad and Matlab and suddenly have gotten stuck going from my Mathcad model back in to Matlab. Keep in mind that the Mathcad model still has a few kinks of its own to work out, but I think there's enough there to show what I am trying to do. The Matlab code is running but the output is weird. Consider for example Ei. The variable is inverse hyperbolic over x (good) but is constant for all of i (bad), except for i=1 and i=2 (which were manually defined in the code)...
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The Three Reservoir Problem Revised In Prime
I converted an old Mathcad 12 template to MC Prime 2 see attached but for some reason the solve block is not returning a solution. Can anyone see the problem - is it something to do with units or has the solve block been set-up incorrectly for Prime?
Regards, Mark
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POLYNOMIAL Approximation to a Function
Hello everyone,
Please look at the attached MathCad worksheet.
I would like to generate a suitable (cubic) polynomial to Ki"zero"(alpha) function and compare it with the actual one.
I guess, MathCad can do this automatically.
Thank you so much for the time and help.
Regards,
Anousheh
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Discrete element problem
Hi, I am trying to solve the attached problem. It includes a system of equations (with deltaC and J) and also a discretized relationship that marches forward from i to i+1 (with Q, C, Y, deltaC and J). Right now I am getting a 'this value must be an array' error. Any help is appreciated.
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