Mathcad

‌Does any one know how to access an upgrade download for Mathcad Prime 3.1? My subscription download portal is still showing only MC Prime 3.0. Is there some special things that I have to do to refresh the portal so that MC Prime 3.1 becomes available in the download list or is it only available to new customers?I would appreciate a response from anyone that has got thEire hands on the upgrade because PTC doesn't seem to care to respond In any way to my query. I suppose that happens when a company grow to big on the backs of their users to care.Regards, Mark

Video Link : 5840

Hello,in attached mathcad 15 sheet, please scroll down to three red arrows(pg 4) where i tried to solve the equation in three different ways, but non worked. this problem can be thought of as an eigen value& eigen vector problem. i am trying to solve for the eigen vector corresponding to a certain frequency.Thank you!

Hi everyone,I need help for a really simple question, I bellieve, concerning the units in a spectrogram, that in turn comes from a fft function. I refer to the example to be found in QuickSheets "WAV-Files, Spectrograms and Signal Generation" (under Engineering Applications). Since I am not very confident with signal analysis, I have always problem to interpret the units in the frequency axis of an fft. In this example Quicksheet (also attached), the frequency axis is vertical as usual for spectrograms. But how can I know which frequency corresponds to the index of the plot?For example: here I have 256 samples and the rows of "spectra" are 129. How do I convert this 129 in Hz? Which frequencies dominate in the signal in the first two seconds?Here under I have now, as a test, only the half of the samples (128). The index is now 65. How do I convert this 65 in a frequency in Hz?I can see that there is a proportionality, and that it must depend on the sampling rate and maybe on the total

The + and = signs and letters such as "f" for Mathcad 14 do not properly appear on worksheet

See the video: Video Link : 5835 An oscillating cylinder steam engine is a simple arrangement which does not require valves to direct steam into and out of the cylinder. Instead of valves, the entire cylinder rocks, or oscillates, such that one or more ports in the cylinder line up with corresponding ports in a fixed port face or in the pivot mounting (trunnion).See more here about this engine.

Video Link : 5827 About tis problem Video Link : 5777

Hey there,I'm having hardship in finding any version of MATHCAD software that can run on 64-bit windows. Perhaps, I'm just from the old school and my expertise came through working with many engineering companies where MATHCAD was the tool number one for design, and therefore, I had to learn it.Now, I'm attending the graduate school and it looks none of my new classmates have heard of MATHCAD! The trend speaks MATLAB! The university is vehemently touting this software from MathWorks. They made MATLAB free, free online training, free tutorials, free on-campus training, free one-to-one training, free maintenance, and most importantly, MATLAB can be installed on any operating system from windows XP 32-bit to 8.1 64-bit and any of Mac IOS system!And guess what! MathWorks package offers us access to all of the following for free:MATLABSimulinkSymbolic Math ToolboxBioinformatics ToolboxControl System ToolboxCurve Fitting ToolboxData Acquisition ToolboxDSP System ToolboxImage Processing Toolb

Hello,i have three questions in the attached sheet about symbolic evaluation. please scroll down in my sheet until you see red arrow. i have a question next to each arrow.Thank you!

To allI am looking at the Dirlik calculation method for fatigue analysis/damage. The method is based on PSD moments and one of the variables is called the mean frequency (xm) (see below for definition). Does anyone know what this "mean frequency" is/represent?ThanksRegardsJXB

I recently put MathCAD 15.0 on my laptop. When I go to open MathCAD files created from my other computer (files created with MathCAD 15.0), the imported objects such as an excel header/footer are shrunk and the embedded autocad images are scattered. Even the right boundary page line seems out of place. In other words when I go to open the Mathcad files on my laptop, the display is different than what I'm getting on my other computer. The display on my laptop is not right. It's frustrating b/c I have many Mathcad files/templates created and they don't appear correct on my laptop. I could try re-sizing everything to fit nicely on my laptop screen, but that would take hours if not days to update all my files. Any ideas? I'm not at all a computer wiz, so I'm needing some help. Does this have anything to do with Adobe reader?Thanks

Hi,I have a Mathcad document that calculates a single value based on two input values. In between, there are a handful of constants defined, some preliminary calculations, 2 solve blocks and a couple of simple equations at the end. Its working great, but I need to do this calculation over and over again with different input values.I know you can define a solve block as a function, but is it possible to define an entire document as a function? If not, is there a way to bunch up a load of equations and 2 solve blocks into a single function?Many thanks!Oliver

It appears that it is not possible to find a derivative-operator in an equation and replace all instances of it with a function.You cannot paste the derivative-operator into the Find-field of the Replace-Window.Is there a trick?

I am wanting to produce a large data table in excel that gives me results based upon formula using 2 nested vectors (I hope I have my terminology correct).Q1: In my simple attached example I am firstly confused why this displays 1 x 9 and not 3 x 3? Q2: Nevertheless I have created an excel component in mathcad to display the results and typed the individual input variable and assigned it a cell reference. This is OK when I have only a 3 x 3 matrix but if this is say 40 x 15 this is isn't realistic.Is there a more elegant way I can do this for a large data set? My ultimate objective is to copy and paste a 40 x 15 data set in to a WORD document.

Hello,When my program calculates a batch, it stops somewhere and I want to know which case caused the problem. Could you please tell me how should I implement the trace function (or any other function) into my program?Thank you in advance.

Hello.I'm trying to derive a formula which is a function of six values. Four of them are just constants but the other two are vectors of three values.d = constantL = constantT = [T1, T2, T3]T_inf = constantE = [E1, E2, E3]R = constantI want to get three values from the dT_i. Thanks..

There is a request at Improve find and replace to be able to replace, say, TestVersion01 with TestVersion02 in Mathcad Prime. This capability exists in Mathcad 15. Simply type Test.Version01 in the Find box and Test.Version02 in the Replace box.(unfortunately, I can't comment on the original idea as I'm not on a maintenance contract).Stuart.

I like mathcad interface. I want to move some simple matrix calculation from Matlab to Mathcad?Does mathcad have these kind of fuction? Thank you!

AllI am happy to announce there is now a tutorial demonstrating how to push and pull parameters from PTC Creo Parametric to PTC Mathcad through the use of Input/Output tagging in PTC Mathcad and the Relations table in PTC Creo Parametric.Enjoy!

Hi everyoneI am experiencing for the first time with WAV-Files reading and postprocessing in MathCAD (15.0). I am using as base for myy first tests the Quicksheet: "WAV Files, Spectrograms, and Signal Generation", only the file reading and spectrum plotting part of it.I just want to ask if I am right in the assuption, that only 8 and 16 bit resolutions are supported. Because when I try to read a 32 bit WAV file, perfectly playable and correctly interpreted by GETWAVINFO, I get an errror message "this file contains bad information". A collateral question would be: is there a simple way to compute the signal to noise ratio of a given audio-recording? Or some other indication of the quality of the recording? Unfortunately I am no expert of audio-processing, but I do need to get some kind of spectral analysis on the WAV file.Thanks a lot in advanceRegards,Claudio

‌Why does the Mathcad blog say that Mathcad Prime 3.1 is now available and gives a link to a demo video of it but neither downloads exist?I have looked in the software download section of my subscription and it still shows Mathcad Prime 3.0 and the demo vides have no reference to Mathcad Prime 3.1. So it looks obvious that all will have paid maintenance for nothing. We don't even know how MC Prime 3.1 will benefit the average Mathcad user. My suspicion is not at all?Regards, Mark

As we draw closer to the release of PTC Mathcad Prime 3.1 I wanted to provide the Community a quick update on specifics. We have been targeting the end of January for official release, but as of today we are still investigating one set of issues with the Engineering Notebook integration with PTC Creo. I expect that these issues will have some recommended fixes from R&D by the end of this week, so we should know a more accurate release date by mid-next week. Assuming that this work doesn't have a major impact on the PTC Mathcad development team, we should be close to launch. Should the impact be greater than anticipated, I'll provide an update at that time.Brent

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I have performed a least squares fit on a data set and fitted a 21st order polynomial to the data. However, within the forum I could not find a good example of how to extract the polynomial coefficients. Since this is a 21st order polynomial automating the process would be the preferred way to go. From what I can garner through other discussions on the subject there may not be a trivial way to do this - am I correct? Anyway has someone accomplished this feat and is willing to alter my worksheet to show me how to do it. If not I may have to buy Curve Fit Expert but Mathcad methods are of more interest to me. Kind regards, Mark