Mathcad

  Using the .dft function in Prime 2.0,  I cannot figure out how to get Mathcad to generate the Fourier transform (F.T.) of a function which is centered about  the zero point (in the time domain).  Regardless of the actual values of the indices used for the array which represents the time-domain function, Mathcad seems to interpret the first point in the array as being at time zero.  So if I have a time-domain function that runs from t= -10 to t= +10, when Mathcad calculates the FT, it interprets the time domain function as running from t=0 to t=20.  This gives the correct frequency amplitudes but it does not produce the correct phase profile.  For example, if the time domain function is a rectangular pulse centered about t=0,  the phase of all the constituent frequencies should be 0 (i.e. the F.T. is “real”). However, the .dft function produces a phase profile that corresponds to a rectangular pulse centered at t=100, which is a completely diffe

Hi everyone    Can someone please help me convert these two xmcd files to mcdx files that PTC Mathcad Prime 4.0 can read? It's driving me nuts.   Much appreciated!   Li

Dear Community   I would like to remove all lines containing zeros from my vector. Please help.   Regards, Tomek

Hi GuysCan anyone help with the issue below. i am trying to find minimum value (other than zero) in a matrix.for example (see screenshot below), i would like to extract non-zero value from a matrix and then find the lowest value in the new matrix. appreciate if you could provide some guidance. thanks

Hi.  Can a solve problems in one dokument without the defining earlier will effect my new problems I gonna solve?  

Hi, I met the strange issue with scriptable component. I try to write a table with a hyperlink to excel file. Everything is OK without hyperlink note "link" If I add semicolon+"link", I get an unknown script error. Problem is in a semicolon. File is attached I changed my regional settings as described in this article https://lockone.wordpress.com/2015/08/06/excel-now-using-semicolons-instead-of-commas-in-separating-formulas-fix-it-now/ now, with comma everything is OK

Hello, I'm trying to write a program that will look into a vector (for example vector below) and as an output will return only once each value inside the vector and assign it corresponding number i.e  t1=1, t2=2, t5=5, t7=7, t8=8, t18=18, t88=88   Thanks for help

Hi,   I'm trying to create a program that removes duplicate entries from an array (vector) in Mathcad. I have managed to write a program that converts all the duplicates into "null", but is there a way to get rid of the elements completely and get the "Result" array?  Thank you.

Hi, sorry for the old question but can`t remember how to solve this simple task. I have a triangle with equal sides and I want to find coordinates of the 3rd point. File is attached

Hi Somebody there can tell me how I can get the angle into a number not in a matrix ?   

Hey all, I've got some strange issue I've never had before. I'm used to Mathcad15 or Prime2.0 so I'm rusty on 14's issues. I normally back-up files at the end of the day and I forgot this one. Well, long story short I spell-checked this 15 page sheet and was about to print it out and drop it in our network drive to back it up and the whole sheet compressed to one page! I've NEVER seen this! I'm at a loss about how to correct it. Any help would be MUCH appreciated! I've attached the sheet but be forewarned it is extremely slow and may crash MathCad so save anything YOU have open first!

Hello,  In my regression model I'm trying to  constrain values of one of one of my parameters to be between 0 and 1 using solve block and minerr function (model attached).  Anybody has an idea how can I do it? Regards, Tomasz

Hi,    I would like to write a program that determines the maximum values per row in a i by j matrix.   I have written the program below, but I am struggling to get it to work automatically, without having to manually add in the number of columns in the max() function on line 3 - please see attached. I thought the second example in the attachment maxrows2(VEC) was the same as maxrows(VEC); however it seems not....   I had an idea to try and split the matrix into column vectors and do it that way, as per the link below    https://community.ptc.com/t5/PTC-Mathcad-Questions/Need-to-select-the-maximum-of-two-column-matrices-and-return-as/m-p/334430#M130735   However I am also having trouble writing a program to automatically split an i by j matrix into j columns!   Any help would be greatly appreciated.   Kind regards

Hi, I would like to integrate a function between a certain number of pairs of limits. The number of pairs is set by a variable, n.th. I'd then like to return the result as an n.th x 1 vector. Could anyone help please?   Please see attached.   Many thanks and kind regards

Hello,   I would like to multiply only certain numbers in a matrix. Only numbers lower than a certain variable.  Lets say I have a 1x5 matrix [23 12 89 44 8] and I want to multiply all numbers less than 30 (in the matrix) by 2.  New matrix would output the following:   [46 24 89 44 16]   Can someone point me in the right direction...   Thanks!

Inelastic flexible chain is thrown over two nails. There is no friction, no lock. How two parts of the chain are sagging. This system has one unstable equilibrium, when the length of the sagging sections of the chain are equal - see the Mathcad 15 sheet in attach. How to calculate two other stable equilibria, when one section of the chain approaches a straight line, but remains in the form of a catenary (see the picture).  

Hi,   Basically, i am trying to calculate deflection of a beam by using Mathcad. But I cant define my range variable with units (mm). I believe using range variable are not allowed as input for the multiple user defined as in the photo. Is there any way to input value using range values with units into a multiple user defined function and then plot the graph?     Thank you,

Hallo, can anyone help me with the question how to vectorise this function? Thank you, br Stefan

Hello, Does Prime have watermarks? How do you label a study/calculation "Preliminary"?

I can create user functions thru Given-Find block: But I cannot do it with Minimize function Is it possible? Have you some examples? Thanks!  

Hello, Everyone.        Thanks in advance.

Dear all,   im trying to solve the energy balance equations of a system of heat exchangers that the in- and outlets are linked with the others. I think that the equation should look like this, but i cannot bring the Odesolve to function:     Can someone tell me, how to finish that? Can Odesolve calculate those T.i(z) in vector? In the attached file, you can see my test value of pairing matrices and initial values.   Thx!   ps.: Im using Mathcad 14

I have problem with create matrix for a system of equations to solve. Please create it for me in mathcad.

See this discussion:   https://www.eng-tips.com/viewthread.cfm?qid=439172   As a first pass, if I'm going to even think about paying for the new version of MathCAD, it needs to be able to have the functionality of the version I'm replacing (11 or 12, I think).    All (and I mean ALL) of the keymapping and defaults seem to be gone, except for the universal Windows based hotkeys/shortcuts.    Is there a way, within the current free trial version, to remap the keyboard shortcuts for things like superscripts, subscripts (both text and actual matrix based subscripts) in such a way that I don't have to relearn all new shortcuts to software that I've been using over 20 years?    Thanks. 

I'm trying to make a bode plot, what am I doing wrong? and how should I do?