Mathcad

Hi, I am using genfit() to fit my experimental data to one function with 3 free parameters. Mathcad could give the best fit parameters very fast.But how to calculate the error of these fitted parameters.Thanks a lot.

I'm trying to familiarize myself with using Mathcad to solve complex equations. My understanding is I should state a guess for the variable, state the given and then use the find command, but this isn't working. Can anyone point out my error in the attached file?

I want to create a table and assign the different variables to each cell. After the solving the values, Save the table to text file. How can do it ??

Hello, I'm trying to use the solver to solve 4 unknowns with 4 equations. I keep getting the error "No solution was found". I can work the answer out easily enough by hand and all the similar examples I have found seem to work just fine. What am I doing wrong? Help!

Hellois there a function for making Mathcad rewrite an expression with the variable Values, ie:a= 500 b =200a*b-----> 500x200=10000Its just for copying and pasting in word..Thanks in advanceCheers

The mhyper function seems to be acting strange in that it returns zero when the function is called with variables for the inputs and the last input is greater than about 70. I have attached an example worksheet that illustrates this.I am using Mathcad 14.0 M020 (14.0.2.5), and a coworker using Mathcad 15 got the same result.Is there a correction or work around for this?

Hi,Does anyone have or know where I can find a Mathcad 15 worksheet that demonstrates an ellipsiod fit to 3D data?Thankyou in anticipation,Mike.

Hi. I would like to solve the equation below by iteration for ro_g=0.616, ro_a=1.2, Ho=2, Hd=1.5 Thank you for the help. Have a good day

Do you know better model of friction?See please picture and attach (Mathcad 15 with only fixed or adaptive methods of ODEs solution) and Prime (with t.e<5.5 hr)..

Hello everyone,I have this drawing of a XY plot in a book and I want to make the same one in Mathcad Prime 3.0 but I am a beginner maybe someone can help me. I have all the values for all the variable there (Ip,t2a,t3a etc). I tried using the available documentation but I can t figure it out on how to do it. Please your help will be very appreciated. Srry for my english writing skills.

Hi,How can I determine the area and center of mass of a polygon knowing the coordinates of its points? the lenght of the segment 01 and the angle between lines 05 and 45? Thank you,Gabriel

I was wondering if anyone can help me out. I am 65 and having difficulty with where to start in mathcad. I am taking an online course in Calculus and they brought up the concept of rieman sums between two functions. I bought prime 3 student edition but I am lost. I am interested in a worksheet that will allow a person to enter two functions, the bounderies, and the amount of subdivisions. and get an output as close to the integrals as one would like. Also if anyone can direct me to a place that I can learn how to use mathcad to make my own worksheets that would be appreciated. If you are willing to show me how, please send the worksheet as an attachment to -

Hi,I need some ideas on how to do the following:I have two variables a and b, the sum of a & b is 10. I would like Mathcad to work out all the possibilities that give me a+b=10, and a keep in mind I would like them to be integers.Thank you

Team,I need to be able to assign a color, based upon wall tension, to a 3D graph of an ellipsoid. In a separate graph, I will also need to asign a color to change in tension in the ellipsoid.Thanks

I am working on a mathcad worksheet where I read data from external excel file. Every time I open the mathcad worksheet, it reads file and does calculations. My question is - is there a way to remember a previous value of a certain variable with its new value and calculate the difference betwwn two?

Apparently I don't understand local variables very well. In the code below, I'm trying to iterate the minimization function using solutions from the previous iteration. After the initial iteration, the values are not updated. Can someone please tell me what I'm doing wrong?

Hi,I have tried to solve a basic buck converter equations "in time domain", using functions (I am quite used to do it in a "discrete" way with fixed step solving). Unfortunately, the odesolve gives some very strange results. Thee current is suposed to go up and down in regular sawtooths going up or down according to the PWM function, but it looks like sometimes the solver skips some transitions, causing the current to jump in stupid ways.I hoped using the odesolve would give me more resolution in the solution (possibly more than I can plot), but this doesn't help me in trusting the solver. Unless I did something wrong ?Best regardsAdrien

Dear all,I have posted a similar question a while ago, and the general consensus was that it is not possible, at least with Mathcad, to symbolic solve a system of coupled second order different equation. However, I have found in many papers and books writing out analytical formula of the solutions to the coupled equations. Attached is the system I am trying to solve. I have seen analytical formula even for one more mass. Although solving this sort of equation with two masses, no damping (dissipation) and with only one driving force is simple enough, even by hand, it is impossible to do the same for a system with two different damping constants and two driving forces. I have been trying for two weeks now, but could not figure out the solution. Of course, I could get the numeric solution, but I could not get the same result as in Eq. 5. So, I was wondering if someone could help me with this. Although it would be perfect if it is somehow possible with Mathcad, but any solution to this pro

Hi! How to solve an equation with a complex variable.G(s):=1/[(s^2)*(s+1)^2]; s- complex variablelike this does not work: solve,s,assume,s=complex|G(s)|=1 ----------------------------------------->0.682 with respect Fynjy....

Hello,I'm sure this has been answered before, but I'm wondering why I am unable to plot two vectors while I am able to plot another. I'm unsure of the tecnical reason why. I would appreciate any help with the issue. Page 3 currently has the plots that are not plotting correctly. I have also put some plots on page 4 showing that I don't think it should be the fault of a range being used.

Steam engines: virtual (created in Mathcad): type 1 http://communities.ptc.com/docs/DOC-2005 type 2 http://communities.ptc.com/docs/DOC-1978 type 3 http://communities.ptc.com/docs/DOC-2842 and real - the ship Dresden (3/05/2014). Created without Mathcad and Creo in 1926.   (view in My Videos)

Hello,my question is inside the mathcad sheet. it is about when the value is odd to return a certain value, and when it is even to return a different value. Thanks!

Does anyone have a Mathcad Prime script for rainflow cycle counting for fatigue analysis that they would be willing to share or can anyone point me to an existing respource. I have several spectra I need to convert into stress histograms. The spectra each have more than 20,000 lines of data

Please,I need export results of functions to a vector or Excel table. I can not work with vectors instead range variables because I have a lot of functions depending of these range variables. After made calculations, I have a function results (with a lot of singularities) and I need find max and min values from these results. I need convert these results to a vector, so, I can use max and min functions to find the maximum and minimum values or export these values to Excel.Someone have any solutions to this case? Thank you.

Hello, everyone!I've noticed that there is a friendly and helpful community here, so maybe you can help me out with my issue. I'm solving a differential equation with odesolve command, and everything works no problem.Now I'm trying to add a periodic square wave function with variable duty cycle into the equation, and everything gets more complicated. I've used two similar methods to define the periodic function and they both work almost the same.The trouble is - with bigger values of duty cycle it works flawlessly, but as soon as I try to lower it, it seems that odesolve misses some values and the solution looks obviously wrong. My first guess is that it is a numerical problem, as the equation also contains some relatively small and big numbers, changing some of which also helps a bit, but that's unfortunately not an option. Maybe there is an option to use some other method besides odesolve, or any other trick to fix this behaviour?All other comments and graphs are in the attached file