Mathcad

Hello everyone.I am trying to create a graph of pressure versus time based on an iterative calculation (see attached sheet), I would like to do this calculation automatically because do it manually it, takes me a long time.Thank you very much in advance.

Is it possible to perform a pseudo “vlookup” in MathCAD prime 3.0? Using the attached spreadsheet, I’m attempting to have MathCAD look for a value in the B column (W8x35 for example) and then once it finds it, have MathCAD set variable “rx” equal to value in column AP, “ry” equal to the value in column AT etc. Is this possible with prime 3.0?

Hi, For long time, I was looking for a way to convert an eqaution in the form of a string into a Mathcad equation. I thought that it can be done with Mathcad Prime 3. However, I have no programming experince with Mathcad. I have mathematical equations saved in Notepad in Windows. They are rather long equations. I don't want to manually convert them into Mathcad since it is not practical. In Mathcad Prime I have realized that if I write an equation in double quotation, delete the double quotations and replace the math operators (+, -, *, /) manually afterwards, then Mathcad treats it as equation. I was hoping that a program can be written in Mathcad Prime that takes an equation in the form of string as an input, replaces the math operators; then Mathcad Prime treats the resultant expression as equation. Please see the attached Mathcad Prime 3 file. Thanks for the help. Mark.

I want to estimate the parameters for a damped oscillator from an observed output (assuming the system acts like a damped oscillator). The attached evaluates the solution for a damped oscillator with zero initial conditions and a forcing function that ramps up to a unit value then ramps down to zero. And gives an example for assumed damping, etc. But I am interested in the inverse problem: Given only the output, how can I estimate or infer the parameters of the oscillator knowing only that the forcing function is as given? Can someone put me on to a systematic way to do this?

I expressded "mu" = "mu[1", "mu[2"...."mu[17" accoding to each "if" fuction.I got error continually. error message said me that value need to be vecotor. But I can't understand

See the Mathcad 15 sheet in attach too - no more as you see on the picture!

I just coppied another seat. But I got different result compared to them.Before coppyAfter coppywhy are they different? I don' knowI attached my file after coppy

I get an error when I try to use the Exel component intergration in Prime 2.0. I have Excel 2010. Error returned is that "Excel is busy." Please finish edits.What is wrong?

I cannot make the graph similar to this. Please help me.

please help me to graph similar to this image.

Hello All,I would like to know more about "genfit" algorithm. My main question is:Why "genfit" routine cannot find a good fit when the guess values are not chosen properly. What is the normal behavior of the genfit outputs with respect to different guess values? I appreciate if you introduce me some references or articles for further information.Thank you.Payman

Hello Everyone, Now I need help with creating a function with the output like as the following ( or a similar ) : Thanks in advance for your time and help. Regards.

I want "omega" to restrict 12.1rpm. So I tried such as a upper picture.But I got error. I can't understand why I got error.could you help me?

Dear Mathcad community,I made an elaborate Mathcad 15 sheet about the offshore pipeline stability according to the DNV code. The sheet turned out to be very elaborate abouth 25 pages of calculations, including iterations, interpolation in tables etc. The sheet works fine and I am very happy with the sheet . However, I would now like expand this sheet so that I can see the stability of the pipeline at multiple locations in the same sheet. I would like to avoid saving my sheet for one location and then save another for another location. I thouhgt of these options:Copy paste everyting in the sheet in a new area in the sheet basically do everything more than once. This is an very ugly method but at least I know this will eventually work.making a matrix of my input and output. However this does not contribute to the readability of the sheet and I am not sure if I am able to rewrite all formulas for matrices (iterarations in particular).Making a function of actually the entire sheet. Is this

HiI need help,because I dont know what I do wrong. Please help.Thanks for help

I have a round paper for filtration with a fixed D.What size must have a cone for filtration with minimum time:We need numerical, graph & symbolic solutions!

Hello. I had a question.I want to make "C" by plusing A and BIt means that "B" from 2 rows(5) should add under 4 rows in "A" automatically.Could you help me?

The attached Prime 3.0 worksheet is a simplified version of what I am trying to do. I am working on a fairly lengthy program function that will accept single-column input arrays (vectors) of varying lengths (or even just a single number) and output an array with several elements. Input/output-wise, it is no different than the simple example in the attached worksheet.When I use the whole data array as the input, the output is an array with vertical subarrays for the three columns. When I use the data array one element at a time (range variable), the output is an array with horizontal subarrays for the rows. This makes sense to me, but it's not quite what I want. What I really want is a single array without subarrays so I can do other things with the output more easily. I don't see that Prime 3.0 has a simple function to "un-subarray" an array.I need some ideas on the best / most efficient / most elegent method for producing a single array from an array with subarrays.Thanks.

Hello,How can we convert a matrix (nxn) into a single column (vector)?Regards,Keshab

HelloI want to import the ground motion data from txt file. I have to escape first few lines of text in txt file then, read only the numeric value.Could you guide me how can I do it?Regards,Keshab

I am using MC v.11.2, and I attempted to plot a column vector (3x1), as one would do in Vector algebra.I saw in the forum for help, and I found the following method:1. Take the vector and turn it in the first row of a matrix of dimension 2x32. Place in the second row of the matrix the coordinates of the origin of the vector (in my case zero)3. Create a 3D Scatter (or Field) Plot and write the three columns of the above matrix.I tried in MC 15, and it works for more than one vector. I re-tried several times the same with v.11.2 and the following error is shown (see figure).I timidly ask:a) Is it possible to plot more than one vector in MC v.11.2 with the above method?b) If it is possibile with the method above, where is my error and how many vectors can one plot (I would need at least 3 or 4).c) If it is impossible, are there some other effective methods able to do it with MC v11.2?Thanks for any feedback. BTW, this is one field where MC lies behind as compare to competitors, where ther

Hi everyone, I am currently trying to design a framework by carrying out the Method of Joints and checking all forces on Mathcad. I have managed to get all calculations, however, when I input it into Mathcad, it came up as an error:"This calculation does not converge into a solution"I have attached the file and I would appreciate it if someone could tell me what the problem is.Thanks for your help in advance.

Hello all,I have been working on filtering an existing graph through a cosine filter in mathcad. I got a txt file (array) into the sheet and started filtering, but the challange that I am facing is the fact that I for an example file that is available to me am using a single current value at one particular point, whereas now in this case I want to filter an entire graph through a cosine filter. I am confused about the subscripts and can't figure out how to extend them accurately so that the cosine filter performs well. To point this out, Ismpl+spc is a single current value, whereas I am now in contrast working with an actual graph, rather than a single point ont the graph:

Hello,in the attached sheet ,please scroll down to the arrows. i have few questions regarding symbolic evaluation? Thank you!

Has anyone else been having trouble with the links in the Mathcad Prime 3.0 "News and Information" sidebar? Many times when I click on one of the "find out more" links, all I get is a page that says, "Sorry! We can't find your page." Thanks!