Mathcad

I really appreciate it if someone can help me to double check the following equation by running my sheet in their Mathcad. It is because the result that I got is the opposite with the result in the paper where the equation comes from.   The decreasing result at small w comes from this part. This is my sheet.   The original paper: https://journals.aps.org/prb/abstract/10.1103/PhysRevB.61.14215 The equation from the paper (phi and psi should be the same):  the expected result (solid line):

hi all,  title  (hopefully) says it all.  I have several data sets.  Each one will be fit the to the same fit function and the sets will share some, but not all, of the fit variables. I have a clumsy attempt at this in the attached sheet (Prime 4.0 along with excel data).  I basically use "minimize" to minimize a standard error expression which has several fit expressions in it (one for each data set).  The problem is that the resulting fit values are nearly identical to the initial guesses!  I've tried reducing the TOL but that doesn't help.   cheers, blake  

Hi,   I want to buy Mathcad Prime SDK / API License to develop a windows based application.  May i know the cost and link to buy it online?   Regards, Ashish

Hey guys,   I'm new in Mathcad and I'm doing my thesis now. I have some trouble finding how to do iteration in Mathcad. So in my file, I have a reactor of 250 m. And I want to know how the concentration changes. But, I want the simulation to run for >1 cycle. Which means I have to define a way to make the Cout (concentration out) from previous cycle, as a value for the Cin(2) concentration in of the next cycle. These are for both liquid and gas concentration.   So in summary I want to make a loop of : COlin (x+1) = COlout (x) COgin (x+1) = COgout (x) + COgin (x)   Help guys 😞 Thank you in advance

Mathcad Prime integration with Windchill and Creo.               (view in My Videos)

Is it possible to associate mathcad's parameters with Windchill attributes in a way similar to associate windchill properties to the parameters of a mechanical CAD?

Hi I want make a program for concatened matrix for example i want to obtain it:   How make a program for this ? In this example , matrix 3x3 in final application matrix nx3      

I have a worksheet that perfectly worked without units, but when I try to insert units RKfixed says that there are still units although I believe I stripped them all. Would someone be so kind to check what I did overlook?

Hello, When I try to move equations on the page to make page breaks come in convenient positions, everything goes haywire in Prime 5.  If I select a group of equations and (say) try to align the first one with the top of a page, sometimes that works, and sometimes it doesn't go where I drop it, but almost invariably some of the unselected equations on the page also move.  It makes it impossible to get everything simultaneously in a nice position. What's going on and how can I fix it? Thanks. Neil

Hi,I need your help in solving the following problem - Say, i have a main program worksheet ( Say A.xmcd ) where i have my inputs . Now my function ( set of calculations) is in another sheet ( Say B.xmcd )..Now i need to pass the inputs from A.xcmd to B.xcmd and receive the ouput from B to A .Say we have a very simple program in A.xcmdinputx= 3Functionf=cube (x)B.xcmdx1=xvalue = x1*x1*x1return(value)The above stated are not exactly the syntax but a pseudo code .How do i link A nd B from A ???

Hello folks,   I have an Excel sheet in which caloric properties for real gas are calculated. One of the values is only delivered when a VB code is executed in Excel. I strongly suspect that these are in a data map of sorts which is what I'm after. Since I can't access this table (the guy who created this sheet has left long since) I'd like to "push" the appropiate button in Excel from a Mathcad loop repeatedly and read out the data in a specific cell. Does anybody know whether this is feasible?   Raiko

Join us on January 22nd, at 1:00 pm ET for PTC’s Virtual Event – Leverage Engineering Calculations in Your Design Process. This webcast will demonstrate how the correct handling and reliable documentation of engineering calculations can greatly impact the success of your project, as well as:   Discuss the challenges in leveraging engineering knowledge in your product design process. Take a deeper look at Mathcad’s capabilities and how it can help solve your engineering problems. Explore how the Engineering Notebook records critical product information in the model itself. Reserve your seat today!

please see attached file. i am trying to use the MINIMIZE function to find both the minimum value of the absolute function and the corresponding variable. as a result this variable would be a function of the remaining variable(s). i tried this with the ROOT function and it works. not sure why it would not work for MINIMIZE function. any help is very appreciated. thanks!

Hello Friends, I want to know the solution of the given below equation using Mathcad Prime 3.1. In above equation, two variable i.e. Phi. & Zeta is given but need to find out Psi. There is a figure given for reference which tells the relation in these variable as attache herein post.   Can anyone tell me how to calculate Psi using the given references and also if I need to plot it, then how can it be achived.   Thanks, Yogesh

I have been looking through the license information and contacted support, but neither gave me the specific answer to my question: Does the one year limitation for the student version extend to the Prime 5 product only or include MCAD 15 (050) as well? I even looked at the license file but couldn't decipher my answer from it. A little background: I had a previous student version (045) installed and on disc but lost the disc and the computer wiped. So with some time, and need, remaining on my student eligibility, decided to purchase 15 again (I don't much care for the Primes). I understood the license time limitation but would have enjoyed keeping 15 for home use. Again, it isn’t clear that when the prime 5 license expires that it takes the 15 one down with it. Maybe I should consider SMath when a year passes/eligibility is gone?

Why can't MathCAD solve this equation? It obviously works after simplifying it manually first as shown in the last step. But how can i get MathCAD to do it in the previous step?

I need to sum all elements of an array.  Is there a function that does this?

I am trying to invert a matrix using the variable names already declared.  I can invert the matrix if I manually enter the values of the variables, but not using the variable names.   I am obviously missing something and would be grateful for any guidance towards resolving the issue.   I attach the entire worksheet but I am only interested in comments on step 5 where the matrix manipulation appears.  I have left notes on the draft section of the page to show what the variable values are and what the problem is.   Kind regards and New Year's greetings to all.

First of all a happy prosperous and especially healthy 2019 to all! I have apparently a misunderstanding when to use indexing versus vectorisation. In the attached worksheet indexing works but vectorisation doesn't. Could someone help me out with this because I seem to be lost. Best regards, Filip

Happy new 2019 year with Mathcad 15 and Mathcad Prime too! I suggest the Mathcad users to raise a glass of wine on New Year's Eve, but not in the traditional way, but in a new way: to finish the animation shown below - pour wine into a glass and tilt the glass, showing the third projection!  

Dear all,I want to remove the straight line coming in the x-axis at the point -0.3in my attached plot.Please go through the attached plot.Thanks.

Hi all  I am doing a calculation of RLC circuit in MathCAD, but I am facing to a problem with usage of "i" ( notation of complex number) as shown bellow: Please help me to treat this .    Best regards,  

Hello! Is there any way to create the matrix "K" automatically? And put free expressions in the other matrix called "B"?    

how to plot graph from table or from excel in Mathcad ?