Mathcad

I tried to define the function so that all the units of measure would cancel out and one would produce a dimensionless mass fraction but MathCAD thinks I am doing it incorrectly.   Please explain what I am doing wrong or provide a workaround.   Thanks!      

Hello everybody, I'm trying to change the sum of angles theta 1,2,3 to a new angle phi. The matrix T03 is the solution of A01*A12*A23. I have been using symbolic keywords like substitute, using and other types of solution but nothing works to show the same matrix T03 but with cos(phi) and sin (phi).  There is some way to do it? Any help or advice? Thanks.  

Hello all,   I am currently working on a project that involves heavy use of Mathcad and I am quite the Mathcad newbie. For context, I am trying to find 6 unknown temperatures that are involved in various radiation and convection equations. I feel I am just about done but getting rkfixed to work is causing me such strife. It says " D cannot be used here" when trying to use the rkfixed function and I have made so many changes but none seem to work. Attached is my problem, the rkfixed is at the very bottom. The excel attachment is necessary to run the program as well. Help would be very much appreciated.   Sincerely,   Mathcad Newbie

Hi Folks,   I just got a new computer and need to load V15.  The PTC download page only seems to have a link to a student editon and it requires a product code.  How do I download V15?  I have an academic license on my old laptop and was planning to switch the license to my new one.  Is this possible?   Thanks for your help 🙂   Mark     Since I started this discussion, I should probably update the group.  Here's what I've done so far:   1 - Tried to go online.  No luck.  PTC web site deosn't recognize my product code.   2 - Answered a license management survey that PTC sent me because 'Your feedback is important to us so we know what can improve upon and how we can better service you'.  I got an email from an actual person asking for product and computer information.  I provided information and got an email from someone in Academic Support telling me to click on the Mathcad Support Wizard link.   3 -

Hello guys.   I'm having a problem with reducing a calculation. In this case, it is the intermediate calculation in a solving progress. Can someone tell me how to remove/reduce the result? I'm new to mathcad, and I'm working in Prime 4.   The file is attached

Hi all! I would like to point out to the PTC programmers, the following annoying Mathcad 15 abnormality that is when I click on a formula the formula is enlarged as shown in the following picture: I'm sure this fact has been noticed by all users. It seems to me that in previous versions, it didn't happen. Thanks for the attention With best regards. MF

Hello guys, I need help with deconvolution of experimental spectra (~400 of them) that contains two peaks - one is Lorentz and second is Breit-Wigner-Fano shaped. Files are attached. Can this be done in Mathcad? Any help is appreciated. Thanks

Hi   I'm trying to make a sheet for consolidation of soil with probabilistic analyses using montecarlo function.   As attached is a sheet of my initial try, but the formula doesn't compute even if the units are totally dropper off from the matrices.   Can this type of relatively simpel formula be used, or do I first need to make a vector of ech parameter with the random fluctuation? The aim is that in final stage the units could be used in the formula.

Hello   I'm trying to compute the stress under circular load (not only below center line, but below any point).   I have found the attached article about the topic, but I wasn't able to make the computation indicated in formula 3c. The units doesn't seem to match. (http://onlinepubs.trb.org/Onlinepubs/hrr/1963/39/39-004.pdf)   I have found an old mathcad computation sheet about the problem, but the reference to these formulas is unclear.   The attached sheet includes some of my tries to solve this problem based on the attached article. But my feeling is that I'm not even close...   Thank you for your help in advance.

I was in school and writing things off the board when suddenly this error occured.

Hello All,   I am using Mathcad Prime 4.0. As seen in the photo below, I am just trying to use a simple if statement. I am wondering what I am doing wrong? The answer I should be receiving in my check is "OK" . Any suggestions?  

11/13/17 I hope someone can help me. I am using MathCad 15 Academic (professional?) and have a problem that involves several variables, e.g. x ,y, z,  that are implicit functions of a range variable, ϴ = 0, 0.1,…1,  e.g. 0 = f(ϴ,x,y,z).   I want to obtain explicit functions, e.g. x(ϴ, y), so that I can graph  x(ϴ, y) vs ϴ in order to determine if a supremum is at a boundary or interior value of ϴ.             I have several such variables, e.g. y(ϴ,z), which are part of a more complex function, e.g. G(ϴ, x(ϴ, y), y(ϴ,z)), that I want to evaluate in terms of a supremum for ϴ.  Using the “find” function in MathCad I have successfully obtained values of x, y, and G, for each of the values of ϴ and manually inserted these into a vector, e.g. x(ϴ, y).  However, I have not created a function as I cannot graph x(ϴ, y) against ϴ.   Evidently, there is something simple which I am not doing (despi

  How to get the intersection points when the number of when the number of interpolation function is large? I have many data. so I should use "for loop".  However, Results of my mathcad code was wrong. I need help!! I explain my problem and attach file including data file.     1. My data "M" is 50X28 array 2. I want to get intersection points of these array. My data consists of descrete points. Thus, I use interpolation function. The even-numbered column of array "M" is the x-axis and the odd-numbered column of array "M" is the y-axis. ex. M<0> (column 0 of M) and M<1> (column 1 of M) -> interpolation function (line 1)      M<2> and M<3> -> interpolation function (line 2)      M<4> and M<5> -> interpolation function (line 3)      M<6> and M<7> -> interpolation function (line 4)   3. intersection point of two line getted by interpolat

Here's what I'd like to see done in Prime 4.Mathcad convertor:Don't flag minor font substitutions(or allow hiding the red bars).  I don't care that the converter arbitrarily changed my plot from 'sec' to 'sec'.On plots, move the scaling automatically to its new place in Prime.  The converter knows that I want 'm/sec' but won't populate the new scaling box.Provide some automation in Prime after I convert a file so I can select "ignore this warning/editoral" rather than having to manually change every instance.Provide Post & Pre-Fix operator functions  (/dB as an example everyone cites)Provide subscript & and superscript formatting in text regions so that the converter doesn't leave me the job of looking for the substitutions.Bring back the ability to convert from within Prime rather than having to do it externally.Prime functionalityBring back the ability to call Matlab functions from Mathcad.  That's right, I don't want to spend my days writing functions in

Can someone help me with this program. I cannot seem to plot the graphs nor can I get the output matrices.   Thanks RA

Updated question from a few weeks ago. I added a few functions and I am having some more issues with getting Rkfixed to work with my system of equations. Last issue was setting origin to 1, and a units issue. I checked units and they are all correct, so I am at a loss as to what the current issue is that is preventing rkfixed from solving.   For the excel file, read in rows 2-47, and columns A-J.

We need find not minimal but maximal way! Do you know more interest, more correct method - see please the picture and the Mathcad 15 file! Physical Mathematics

Is it possible to define a single function (for example a cam) in segments and then show it in one continuous graph? See the attached example. The reason that I would like to do this as a function rather than an array is that I wish to subsequently repeatedly differentiate it to get from displacement to velocity, acceleration and jerk. Thanks, Karl.

I am having multiple issues with matrix operations in an FEA assignment.   The first was multiplying a transformation matrix by a stiffness matrix, I got an error stating the units were incompatible. Removing the units from everything solved this.   The second was an error with integrating inside a matrix. It said nothing was defined and I couldnt redefine any variables. It was like they were stuck with the origional variables. to solve this, I did the integration by hand instead.   Now I cannot get the local forces to transform into global.   I am unable to attach the file because this website says the contents of the attachment do not match its file type. I will attach a screenshot instead.   Thanks in advance.

I am trying to get a polyfit curve from attached excel data, page 12. Data points read in fine and plot. I am getting a plotting error when I try to graph the polyfit function. Using Mathcad Prime 3.1. My goal is to generate an equation that approximates the data points for use in control scheme. I will need to display the coefficients as well. Thank you in advance for your assistance.

Hi everybody. I have attached a picture of my function. Does anyone know how to find a way that the while loop goes to the next loop whenever there is an error in the D_M function?  My current way of coding does not work and I cannot find the reason.

Hi all,   Can someone tell me how I can set up a function to perform multiplication or other simple equation.   So for example I have an equation of a=b*x^2    In this case b is a constant and x is a variable. How do I go about getting a variety of answers for a range of x variables? i.e. if I define x:= 0,0.1...1?   So I am hoping to get in this case 11 outputs for a.    Thanks,   Andy.

In MC prime, how do you change the default location where the files are saved with the save as command? I don't want to keep updating every time I use save as.

Ever since our upgrade to 4.0 we are noticing that the Y-Axis of the plots are getting replaced with the X-Axis numbers whenever we print.  It does not matter if we print to a printer or to a PDF file.  The MathCAD file is fine on the screen but all plots have the X-Axis data on both axes and the corresponding plotted data reacts to this and changes position on the graphs.  Our support contract recently expired and PTC does not seem interested in hearing about product bugs unless your uspport contract is up to date.  Below the PDF file in on the left and the MathCAD window is on the right...

Guys i enjoy using mathcad, its fast and easy . But i have this big problem now. My file is corrupted at some line. I did a lot of work and i cant lose this file. Anyoune can help me ? The important part of the file is just the first half . Please guys help me .