Mathcad

I want to create a matrix using a little program with Kronecker Delta (1 if i=j, 0 if not) however it does not work. Where is the mistake? Thanks!

When we have not a circle but a line we have a parabola! When we have a circle we have line (r=0), hyperbola and ellipse? Or?

We all know that the symbolic engine in Mathcad (mupad) is not state of the art and often is not capable to solve or simplify expression where other software succeeds. But this wrong result "1" is surprising nonetheless. Can anybody provide an explanation (other than it being a bug)?

Hi All. I m trying to model a circuit which is basically a CE amplifier.   I m not sure how to start. Can anyone please help?

Hello everyone,   I have the following matrices:   x = (15 -17)    y = (-6 20)   z = (55 -75)    I would like to combine them to form a new matrix such as,   A = (x y z)   I'm thinking (not sure if its right) A would turn up to be a 1x6 matrix.   A = (15 -17 -6 20 55 -75)   Then I would like to get the maximum absolute value of A which if everything is possible up to this point then the result would be 75.   Any suggestions?   Thanks!  

I am wondering then how to fix this new problem. I have fixed the error for the basic file, but now I want to express the heat transfer not knowing the wall temperature but rather knowing the ambient temperature. The equations are not too bad to solve, but I'm having issues with the solve block having too many arguments after I made the functions of the variable I wish to solve for. I would like to put my conditions in as a function and get the feedback for the correct outlet temperature (assuming the thermal gradient isn't too large that the wall temperature varies greatly in the z direction along the pipe axis).The issue is I would like to express the properties of any given substance as a function of temperature (or average temperature in most cases).The excel spreadsheet (minus updating the properties) gives a correct answer by iterating through. The user needs to press the buttons several times until all errors are zero.I know I can do this problem in excel or a programing languag

I found a problem with WRITEEXCEL.  Wondering if anyone has a workaround.  If I write output to Excel (let's say 1,2,3,4...20) it writes those 20 rows to excel.  Then, if I change my result to (1,2,3,4...10) it writes 10 rows.  However, in the excel file the data in rows 11-20 are still there from the previous result.  So I have 10 rows of good data and 10 unwanted rows.  If I use WRITECSV it overwrites the entire file and I only get the 10 I want.  So, I can use that but is there a way to fix it for WRITEEXCEL?  Is this a bug or a 'feature'?  Using prime 4.0.  Thanks.

I am new to MathCAD and am doing a simple static force equilibrium analysis. My goal is to understand the best way to do this type of analysis so that I can then scale it to more complex problems. MathCAD document is attached (prepared in MathCAD Prime 3.0) and a scan of the sample problem that I’m working on is shown on the second page of the document.   I was able to get the correct result using Method-1 and Method-3 but I’m not able to get Method-2 to work. In Method-2 I’m attempting to make the resultant loads Bx and By (the variables I’m solving for) variables within a function called B. I’m then trying to call function B in the moment equilibrium equation to simplify the form of the equation. If I could get this approach (or something similar) to work it would be great because for more complex problems it would be very convenient to write equilibrium equations as a function of reaction load [B] where [B] represents Bxi + Byj + Bzk.   Also, as mentioned, Method-3 works b

Dear All, Please help solve this I want to Preparation Preparation Element of Matrix and get Result(Yellow) as picture below. Many Thank,

Why I cannot create the plot with second axis?

Dear everyone, Please solve this in Attachment Picture Step1How to Auto-create Matrix with nxn ? Step2  Put  Matrix provide in Step 1 by Column and Rows User Instruct. Many thank

hi i need to export the values of f(t) to excel. although i tried excel component it doesn't work.so can you pls recommend this its my part of my dissertation.  its mathcad prime 4.0

Dear everyone,Do you have Mathcad Sheet to calculate external force of continuous beam analysis ? Please share meAnd could you guide me how to calculate Global Matrix Stiffness of flexural Member in mathcad?Many thank

Has somebody Mathcad sheet which return coefficient a, b, c and d of the equations y=a*x^3+b*x^2+c*x+d of the cspline?

Hi everyone. I'm working with reliability and for many times I'm facing the problem that mathcad can't evaluate cnorm (x), when x is equal or bigger than 9; it returns 0. I read the comments related to the subject on https://community.ptc.com/t5/PTC-Mathcad-Questions/Standard-Normal-Dist/m-p/349437, but I couldn't solve the problem. It's not a problem that can be solved by going on format > results > tolerance (zero threshold) or tools > worksheet options > Built-in variables > convergence tolerance. I understand that mathcad can handle numbers up to 10^-307, but when solving an integral or, for example, applying cnorm function, the result is 0, when the number is less than 10^-17. I would be so thankful if someone could help me to solve this problem.

Dear Everyong, I have 2 Questions to you all help to some keys to me. (have attachment)1.How can we take the zero (0) element away in our matrix to create Matrix with non-zero element?2.how can we create the coordinate of each element form "Start Point or Origin" ? Thank you for your help. Best regard Phearun  

Hello everyone ! Someone can provide examples of finite element analysis calculations using 2D and 3D elements. If anyone has experiences with this type of calculation please help me. Thanks !

Hello,   I am working in mathcad prime 3.0 on an assignment and I am modeling a Trickle Bed Reactor (plug flow behavior). I have set up the mole balances, from which I know by now that they are correct. I use the odesolve function to solve a set of differential (and algebraic) equations. However when I plot the results I do not get the results I want. Attached is the file I made. I made a plot with the liquid concentrations of the components. I see only a difference in the concentration of A and I am wondering what I am doing wrong, because i should also a difference in the concentration of B and C.   Below a brief description on the case: I have three reactions. The third reaction does not take place due to a reaction rate constant which is zero.  A + H2 -> B B + H2 -> C A -> G (This reaction is not taking place)   I am feeding hydrogen in the gas phase to the reactor together with liquid component A. I have set up 9 mole balances. The solid phase is in

I am having trouble with a creating a cumulative result from a simple integral I have a set of 4 data (vectors) Y1,Y2,Y3,Y4 I take the min(Y1,Y2,Y3,Y4) at each value X I create an interpolated vector of the min envelope - interpolated data seems to match the “raw” as I plotted it And I want to calculate the cumulative integral of this min vector between f1 and f   For some reason mcad seem to be taking a very long time. Maybe he stuck in a loop   I suspect my cumulative integral is not set up correctly – Attached my test sheet   Thanks Regards   PS Found this discussion https://community.ptc.com/t5/PTC-Mathcad-Questions/Integrating-an-Array/m-p/539177#M179014 But the I cannot open the file attached by Fred

I met a bug when I try to plot a surface which is 10 000 units far away from the 0,0,0. MC 15 file is attached.

I'm using MathCad 3.1 and for some reason x in my function is always labeled as undefined and I can't figure out why. I played around with labeling the variables and such but it won't work. Normal functions work just fine. Is MathCad not able to do this?   A solution to a similar problem was done in mathcad 3.1 that worked fine, I could just enter 0 for x but i need to be able to use dp/dx in other equations    

Here's a simple model of an electric motor.  It works fine but I'd like to solve it with an added complication - a limit that current can only be 10A or less.  I couldn't figure out how to do it.  Any ideas?.  (4.0 attached) Thanks,

How do you install and activate this program? I have never received a product number and can't get a hold of anyone from PTC for tech support. This is a joke!

I downloaded Mathcad Express Prime 4,0 and Mathcad 15 today. Mathcad 15 seems to work fine and I can open legacy mcd files and then save them as xmcd files. However when I try to use the xmcd mcd converter function in Mathcad Prime 4.0, it does not work. I add a worksheet and then hit the convert function and it gives me the message that the PTC Prime xmcd, mcd converter has stopped working. I do not know how to fix this problem. Does anyone know how to get the converter to work? I get the same message for both mcd and xmcd worksheets. I am able to open both of the worksheets in Mathcad 15. Thanks.