Mathcad

hello folks,I'm trying to fit a function to the reversal points of an oscillation I measured some time ago. I tried LeastSquaresFit, but it fails claiming that the confidence limit was exceeded. I tried different confidence limits but to no avail.Does anybody has a suggestions how to make it fit?I'm using MC15 on a win7 machine.Raiko

I was trying to draw this graph, but how im supposed to define x ?

Hi, everyone,I am trying to construct the finite element function through a loop since the function is split into parts according to the number of elements.In the attachment I define uh(x) as the approximating function which follows:for each element,uh(x)=a*N1(xi)+b*N2(xi)+c*N3(xi),where a, b, c are the nodal values read from the u vector constructed. N(xi) is the defined function where xi ranges from -1 to 1. A mapping from x to xi is also defined in the loop (xi=2*x*NumELE-(2*i-1)), as xi is for each local domain and x is for the global.When I test the function with a value of x, Mathcad suggests that it can only be performed on an array,is there a way to construct such kind of piece-wise function through for-loop?Looking forward to your help!Thank youShawn

I have a question about the x-y trace function in MC15When you select a point, the trace box only displays the co-ords to 5 sig figs - if you "Copy x" or "copy Y" you don't get any more precision, and it is not enough to uniquely identify a point when you have a Monte Carlo analysis with 10^6 points. Is there any way I can increase the resolution? The little example below illustrates my point

Positive mass of Moon:Negative mass of Moon:

Hello everyone,this is my first post here.How can I use "Given/Find" in this situation (see my file) to find e(s) and k(s) (which are functions, not exact values)?The problem is a beam made of two glued materials (iron and copper), embedded at one end, loaded with a load P (down, positive y) at the other:I have to find the distribution of "sigma zz" (z is the axis of the beam), for which e(s) and k(s) are needed.However I think mine is just a problem of calculus, so even non-engineer could help.

Hi!I am plotting the angular difference between the input and output shaft (beta) of a universal joint at an angle (alpha).How can I get the maximum value of the function beta? (where beta is a function of phi1 and phi2, and phi2 a function of phi1)I am using Mathcad prime 3.0.Best regards Christer VestermarkThe relevant equations:The plot, where the relevant function beta is purple.

Hello!I'm a new mathcad-user, and I have some problems with calculation of the displacement of a hydraulic motor.PTC Mathcad obviously calculates differenz results, when using units and no units ! ????calculation without units:q = ( (590,72 * 2 * PI) / 380 * 10^5 * 0,9 ) * 10^6q = 108.526calculation with units:q = ( (590,72N*m * 2 * PI) / 380 * 10^5Pa * 90% ) * 10^6q = 102.82cm^3Please help me!Many thanks in advance!BRPaul

I am trying to hide a calculation region how is that done?

Hi all, Is there a way to split long equations to fit on one page? I am using PTC Mathcad Prime 3.0. I have long equations and when I try to print, some parts do not show up. I've tried to use landscape, reduce the font size and number of decimals...nothing is working.

Can we use Odesolve for boundary problem.I think for one ode can, but for 2, 3...See please the attach.

I was trying to simplify a calculation, and the symbolic processor returned a response with this function. The symbollic answer lists four arguments then will not evaluate or even recognize the function. (See attached.) Other references have four arguments, the MatLab web page says MuPad lists 3.Anyone have a numerical evaluation?

I have a Mathcad user that needs to know how to convert files from version 14 to version 15. User only has version 15 installed on his computer.

I would like to add the angle sysmbol (∠) as an element in the Custom Character menu in MCAD 15. Is this possible, and if so how can I do so?

Hello guys,I've tried to do a little FFT. I created a sinus signal with 10 Hz perisodicity, but both, FFT and CFFT, return a different frequency. There must be some basic problem with my setup, but I can't figure it out.I's appreciate any clueRaikoP.S. I'm using MC 15 on a Win7 machine

I am a professor and use Prime 3.0 in my classes. Yesterday a student downloaded and installed Prime 3.1 on personal laptop. He now cannot open Prime 3.1 files on our lab computers at version 3.0. Please tell me this is not the case?! How can changing from 3.0 to 3.1 cause file compatibility issues? I thought these were upgrades were reserved for bug fixes and minor upgrades, not major overhauls. Is there any way to get the file to go back in version? I know I could upgrade my lab computers as we are under maintenance contract, but updating software during and academic year is problematic at best. Any options would be appreciated.Thanks,Jeff Beltramo

I'm getting an undefined variable error when trying to plot a pair of functions to draw a circle.I can however get the individual expressions to plot if I don't use them as part of a functionso Mathcad is able to access all the values.I'm guessing it has something to do with the way I've used them in the functions.I have rearranged them a couple of different ways and it will change which variableit sees as undefined but that is all.I know there are other ways to draw a circle in Mathcad but this one has it charms forwhat will be included in the worksheet later.Thanks.

I think that all equations f(x) = 0 can be re-written as x = g(x).If x0 is a root (unknown) and x01 some approximation of the root, sometimes we can obtain a better approximation of the root by repeated substitution, such as :x02 = g(x01), where x02 is closer to x0 than x01 ;x03 = g(x02) or = g(g(x01), where x03 is closer to x0 than x02.Is that true for any function f (or g) ? Does someone know the proof or a book with it ?Probably the answer is obvious ... .I saw something about in an old book of algebra with polynomials, but I find it no more...Thank you ! Liv.

Suppose I define a custom function foo with parameters (A,B,C,D) but I want to give the user the option of calling it with only A and B and handling the absence of C and D gracefully in some way. Is it possible to write a test that checks to see if C and D are specified, or will the call return an error in any case where all parameters are not given?

in MathCAD Prime 2.0 How do you wrap text on a long equation that runs off the paper?

Please find attached the description of a bad result found by my colleague working with mathcad.Does anyone have an explanation or solution to this issue?Best RegardsDiego Signoretti

Excuse my language but I can't think of anything to say except : LOL.

Hi,I have a chunky (21 Mb) Mathcad file that has got slower and slower and now is just hanging. It does not register as 'not responding', I can scroll, but cannot click into the screen, and the sheet is not re-calculating. I was mid save, and had about 1 hour work that was not previously saved. I would rather not lose it.Any ideas?ThanksFrank

Hi everyone,Are there any example sheets for the calculation of force and moments for the multilayered structures using intergration and differentiation equations?

I am trying to convert some v13 files to run under Prime 3.1. The xmcd, mcd icon is greyed out under the input/output tab?