Mathcad

Attached is a little problem in 4.0 that has me stumped - not sure how to set it up to solve.   The problem is for a pump - which we know performance of.  I need to find the speed to deliver the required flow and pressure must exceed the requirement (it can be higher) and the speed should be such that the consumer power is lowest while meeting the flow & pressure needs.  Since efficiency/flow/head curves vary it's possible that the lowest power speed delivers more pressure than necessary, but does so efficiently.   Everything works up to the solve block, and despite many attempts I can't figure out how to formulate it. Thanks,

I need to create paths(creating matrix of coordinates) just check image that i have given below is there any simple method to solve this ? this graph has to be plot in x and y coordinates.

To all,   I am looking/thinking about something and would like to know if it’s possible to create vectors populated with random numbers. I have only started thinking about it so don’t throw a stone at me if it’s so obvious.   In the attached mcad 15 sheet, I have an equation which is the sum of j-values (j=3 in my example) Is there a way of generating the values in the vectors in a random way so that the vector length is changed by the user? For example I may want a 1st pass with j=10, then j=20 and maybe j=100   The constraint is that for the vector fnv: f1 < f2 <f3<…<fj   Would this be better set-up as a MonteCarlo problem using mcad buil-in function   Thanks in advance

I understand that my S 2 and L x are both defined as vectors.  I’m using a comparison operator (<) that compare scalars, not vectors.  I have no clue how to make an if/else if statement work.  Any assistance or advice would be extremely appreciated.

hi,   Can we integrate solidworks with Mathcad prime 5.0? if yes , can someone please send me the procedure. Thanks in advance.

Hi, i need some help with a calculation.   Here is the link to the earlier calculation. https://community.ptc.com/t5/PTC-Mathcad/Intersections-Calculate-2-circles-Analysis-Math/m-p/592999#M184561     This calculation calculation is about the stroke arm in connection to the angle of the liftarm. The solution to solve this problem was to calculate the intersections of the two cycles. In the dokument "Berechnung_Masse_Hub" is at the first site a picture of the geometrie.   The following calculation i need is to calculate the speed of the stroke zylinder. The angular speed is constant, i like to have these angular speed as a variable. At the end of these calculation i got a diagramm, where is on the x-axis the stroke of the zylinder in mm, and at the y-axis is the stroke speed in mm/sek.   Thanks for helping.   Marc

Lately I've been playing around with addons of various software products to see if they could help with integrating reoccurring design tasks across software products that do calculations, technical drawing, and finite element modelling, and building information management (BIM)   Looking at the webpage https://support.ptc.com/support/mathcad_downloads.htm there are links for a number of addons. In particular I'm interested in the 3rd, 4th, and 8th items labelled "PTC Mathcad Add-in for Microsoft Excel", "PTC Matchcad/AutoCad Integration", and "PTC Mathcad/Revit Integration". When I click on any of those links, I get a "Document Not Found" page. The instructions it gives are not helpful: "Please try one of the following methods to locate your document: Click on your browser's BACK button to return to your previous page. Select a section from the top navigation bar. Use the search tool located at the top right of this page." My questions are: How are those add-ons accessed by

Hi, Function for evenly spaced points in Mathcad 11 or later.  Can easily be written for Prime.  

I am writing a program and would like to use an if statement  with the following format   if X exist if X does not exist   Running Prime 5. I did not see this as an option in the help files. Mathcad 15 does not appear to have the feature either   David

I don't think this is possible, but hope dies last, so hence this post:   Is it possible to plot multiple traces in Mathcad Prime with the arguments being sourced form a single matrix or array?Let's say I have a simple function of the form f(x): 2x + a I have an array of 'a' values: a: [1, 2, 3, 4, 5]   I wish to plot 5 traces (a trace for each value in 'a') without manually adding and writing out the function five times in the plot window (there will be cases when I might need to plot many more than 5 traces, so looking for efficient methods).   Your responses would be greatly appreciated.

to all math experts,   I have started looking at a method involving PSD and co-variance matrices. I am trying to set-up an example in mathcad (15) out inf interest and struggling with an eigenvalue extraction. I think I need to "invert" the problem but don't know how. Attached mcad15 file and a pdf. see sheets 4 & 5   Some pointers on my ignorance would be welcome   As a side issue: I am correct in thinking that one cannot calculate the cross-spectra  PSD form 2 PSDs   Thanks Regards

One mathematician has said me that if you have 6 parameters in the minimize function - you must have 6 or more equations in this solve block. I have only 4! Is it correct? See please one interesting problem in attach! Thanks! 

Trying to help an instructor solve a problem. He has requested that we go back to an older version of MathCad because Prime  can't do what he needs. Example provided below.   The MathCad prime cannot plot a figure (Z), when the variable (Y) is a function of another variable (x). Example: ------- x = a, b, ... c Z = f(Y) Y= f(x)   Plot Z as a function of x. -------

I am needing assistance integrating the attached equations. What I am wanting is a symbolic result of a generalized Maxwell equation for the force generated by the flux density. I have the flux density equations and the Forces (Fx,Fy) is the cross product of the Z cross Y and Z cross X components respectively. taking each independently and integrating twice will result in the the force.    What I need is the resulting symbolic equation.  my attachment only has the Fx info Fy is a similar result. What I am looking for from the community is some suggestions to how to break this down so it will integrate?      Thanks looking forward to your responses.   Richard

I can not figure out the syntax mistakes I am making. I know there is a way to use matrix callouts together with symbolic equations. In the included example I want to get a 3 row 1 column back where the top row is calculated using the top row of all the matrices mentioned and the second row is calculated using the second row of all the matrices mentioned and so on. Where am I going wrong?   Thanks

I'm modeling glucose conversion to ethanol through solving a series of ODEs of enzymatic reactions. How do I set the constraint that all concentrations are >= 0 and the total mass of all compounds in the pathway are constant over time. Any help would be greatly appreciated!

The chapter 4 of the book "2^5 problrms for STEM education" "Solvers Or the Mathcad magnificent seven" Mathcad sheets in attach

Optimization with Genetic algorithm.Try pls Mathcad Server with your test function f(x, y) - http://twtmas.mpei.ac.ru/mas/Worksheets/Minimum.mcdand see the picture:PS I would like to create a video but sorry - no time.

The chapter 4 of the book "2^5 problems for STEM education" "Guess the Image Or The Matrix Game" Mathcad sheets in attach    

Hello,   Is there a way to export data from Mathcad to excel. My Mathcad version is prime 4.0.   Thank you,   Faisal

Hey, I am from Germany and need some help. I am new with MathCad.   I want to calculate the insections of 2 cycles.   My Problems:   The plot of 2 variables in 1 diagram doesnt work. I tried it on the x-Axis with f(x,y) and on the y axis with x,y. No cycle is shown.   Then next problem is to subtract f(x,y) - g(x,y). Whats the Syntax? Can somebody tell me?   Is it possible to write a litte programm which calculates me the intersections or tell me the solution? My program: m11:=0m12:=0r1=8 m21:=7m22:=8r2:=3.25 f(x,y):=(x-m11)^2 + (y-m12)^2 - r1^2g(x,y):=(x-m21)^2 + (y-m22)^2 - r2^2 h(x,y):=f(x,y)-g(x,y) Thank you.   Greetings MM

Help please - see the attach

Hello,   I am trying to assign the last row of a vector of values to my result. I want to start assigning from the second column and assign that value in the first column of a new variable but it is telling me that array index is invalid. Please help me to solve it.     Thank you, Faisal

Hello, We've been using MathCAD 15 for years and have many calc's made using Combo Boxes.  I recently upgraded my machine to Windows 10 and get errors when opening our programs.  We got a new computer for a new hire last year with Windows 10 and everything worked seamlessly.  I think I may have figured out the problem, but I have no idea how to solve it.  The ComboBox that we use is apparently the Microsoft Forms 2.0 ComboBox, it shows up as below on my co-workers MathCAD under the Insert Component.  However when I go to the same location the option for Microsoft Forms 2.0 ComboBox doesn't exist.  How do I load or install the Microsoft Forms 2.0 Objects?  I've searched online everywhere and can't find anything that works.   

This may seem like a silly question, but I can't figure out a simple keyboard shortcut. I searched online but to no avail. How do I select the math range that I my cursor is in?? Say I want to delete a math range. How can I do that without using the mouse. Say I want to move a math range around, how do I do that without the mouse?   This would help my flow in mathcad tremendously since I wouldn't need to pick up my mouse and make a selection box to help organize my work.   Thanks a ton for taking the time to answer my simple question!