Mathcad

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 .

Hi everybody does any body have idea how can I set VBscript behind a contorl to use it as a dynamic combo box I mean I want to set 2 combo box in worksheet which senond one being depends on selection in the first one as we can do it in listbox but I was not succeed to do the same in combo box I am not that much familiar with VBscript and I do not know which part of code is wrong  and I also know it needs something like Listbox.resetCount at the first but for comboBox so your help will be highly apriciated  I attached my trying file thanks

Hi!How can i write the 4th-6th term in the biharmonic equation, using mathcad 14? RegardsSigurd

When I try to open this file I get a message saying it is corrupt with the reason "element content is invalid according to the dtd/schema". Does anyone have any ideas on how I can recover the file. I will attach the file if anyone can help me out. Thanks

How can I find Alpha if "m", "m_2" and "e" are known. (I'm using Mathcad prime 3)

All our mathcad files are in the Mathcad 15 format (i.e. .mcd and .xmcd) However at my new company we want to purchase a Mathcad 15 licence, but on the PTC website only Prime 4.0 is available. If i buy the Prime 4.0 licence, shall i get Mathcad 15.0 too ? As i understand prime and mathcad 15.0 are not 100% compatible.

Hello,  I am working on a project, but can not find a way to produce a decent log plot over a large range. The issue is that if I use the log function under plots with a range variable for my x values there will be too few data points on the low end of the plot to look smooth. So I tried making a log-based x set of data using a range variable converted to a power based set of vector data, variable d, but the when plotting it says can not divide by zero. Though after multiple checks, I do not believe my d values ever goes to zero. I just need to be able to make a plot of y vs log(x) able to span a range of 10^-10 to 10^-3 meters and have sufficient data points for the small x values.  Also getting this error now for the second attempt, Plotting failed. Replace complex values and NaNs by real numbers.    

....Success!!!!!!!!!!!!!! and finally someone is in pole position....but how many years of hard struggle ...     Physical Mathematics

In Mathcad 15, if you have a subscripted variable: and you execute a Find and Replace:  you get:  If Prime 3.0  gets you VERY Frustrating!!

Hello everyone!How do I delete a blog I created earlier? Thank you MF

Hi to all I have a table (table_data) that contains a large number of rows in which the coordinates of X, Y and Z of several objects named POLYLINE and LWPOLYLINE are found. I need to extract the values of those coordinates, sort them in a table and indicate which belong to one object and which belong to the other. To better understand what I want, I attached an example of what I want to do automatically, since I do it manually and it takes a lot of time. In advance thanks for the help

Hi, Could anyone help me out regarding calculation of outlet temperature of parallel flow tubes heat exchanger design? In my case, 500kW/m^2 is peak flux on surface of 20 tubes and the outlet temperature is less than 200c.so,  what would be the key factor in this scenario to achieve desire temperature, e.g. tube dia, fluid velocity, mass flow rate or any other factor? 

I am trying to have my results in gallons/day but my answer keeps giving me cubic meters/day even though my inputs are in gallons/day     Please help

It is my old program and old question? Do you know better Mathcad program (anneal, ant etc) for this task - see please the animation and the Mathcad 15 sheet in attach!   Physical Mathematics

Hi!I would like to ask if it is possible or if there is any workaround to passing a file path to a variable then using this variable for the Insert > Reference feature?For example, my file is located at "C:\sample.xmcd".I would like to assign it to a variable that:FilePath:="C:\sample.xmcd"Then use this file path for Insert > Reference > Insert Reference to File in another worksheet.This is because I have some user-defined functions defined in sample.xmcd that I would like to call in another worksheet.If this is not possible, is there any other way to reference user-defined functions?Please note that hiding the functions in the worksheet is not an option. So is defining those user-defined functions in the same worksheet.Thanks and best regards!

 Hi everybody, I'm try to learn more about this software so my questions maybe are a bit basic. Is there any simple way to extract the minimun values of a arrays of a matrix a generate another matrix 1xn ?. Something like this:    The problem is that the size of the matrix wil change in each exercise. Thank you in advance.