Mathcad

Looking to provide a sequence number above both the ratio and check matrices, see attached image, to correspond with the check list above.  I work with Mathcad Prime 10. 

As the song says,   What a diff'rence a dalgorithm makes.Timing in secondsOr, by hours reckoned   While developing a function to convert an array into a set, I was shocked to see how slowly some of my algorithms performed.  After a bit of playing, I suspect that fold or stack handle nested arrays and some other data types differently than they do scalars.         Stuart  

Mathcad Enhancement Proposal (MEP) - Extend the scope of ℤ to include all IEEE 754 consecutive integers, where ℤ is the set of integers.   Mathcad's Is-Element-Of operator x ∈ y determines whether x is an element of y, where y is one of the sets ℂ (complex numbers), ℝ (real numbers), ℚ (rational numbers), or ℤ (integers).  Is-Element-Of works both symbolically and numerically (except ℚ in the latter's case).     When numerically evaluating x for membership in ℤ, x must lie between -231 and +231-1.  However, Mathcad handles numbers as 64-bit IEEE 754 floating-point numbers; thus, the full range of consecutive numerical integers in Mathcad is -253 and +253-1.   The maximum positive floating point real number, realmax,  is 1.7976931348623157×10308.     realmax ∈ ℝ and realmax + realmax×1i ∈ ℂ both return true (1).   Implementing this MEP wou

Mathcad was a pretty good tool. A quick and practical way to do your engineering calculations. That was version 9 way back and still my most used version. After that things didn't change much and together with some minor improvements, some issues came into being as well. I suppose their was no profit in leaving a program that worked just be what it was and so Prime came into being. And what a piece of junk it was. Slow, cumbersome and either lacking important functionality or simply not doing what it should.   Now on version 5 things should have been better. I mean, after eight years enough people should have complained that it didn't work. Right? Yeah. Too much to hope for. It's still slow, UI is still a mess, you can't comfortably input your work quickly and key features that worked fine as far back as Mathcad 9 still fail miserably.   As is the case with many programs, if any of the developer would actually have to use their own program for actual work, they would have kno

Hi, I'm having trouble finding the value of a variable using symbolic operations. Let me explain:I want to find the variable (theta) of a symbolic function within a range of valuesI'm using Mathcad 11

I'm using MathCAD 9.0.0.0. I get this error on my last equation... 

I'm using MathCAD 9.0.0.0. For whatever reason, MathCAD is having a problem with variable units of my final equation in my attached file. 

I'm using MathCAD 9.0.0.0. In my program I have the formula...I have every variable set in my program accept h2 that's in the equation twice. Is there a function to solve for h2? Otherwise, I guess I can rewrite the equation to solve for h2? Thanks,Brent

I attempted to use Mathcad Prime 11 to retrieve a Mathcad Prime 7.00 file I created but I could not. The file extensions appear to differ.  How can I retrieve this file into Version 11 without having to recreate it?  Thanks!

Hello, I want to create the  origin  function within a dropdown list (combo box) for an array index operation. Is this possible? I'm using Mathcad version 11

The values of a symmetric function f(x, y) are calculated and entered into a table using the matrix(m, n, f) function. However, taking into account the function's symmetry effectively doubles the computational effort. How can I eliminate this double computational effort while taking the function's symmetry into account?

Hi folks, My problem is a simple one - calculate the vertical overburden stress in a soil mass.  The simplified equation is just [ unit weight of soil ] * [ depth ].  However, in a layered system with a different unit weight for each layer, the calculation is best formed as the sum of the vertical stress increments. To me that looks like a stepwise function constructed as a series of IF-ELSEIF-ELSE statements as shown in my example below.  It works but there is surely a more clever way. Lets say the bottom of layer 1 is z1 and the stress is p1, and the stress at some mid-depth in layer 2, say z2, is delta_p2, such that the stress at the point in question is p(z2) = p1 + delta_p2.  What is the most efficient way of structing that calculation as a function depth (z) so that it can be scaled to any number of layers.  My best idea so far is an "If" function to evaluate the stress at the bottom of each layer plus the portion of the n-th layer at the t

I have a matrix and would like to obtain the product of rowi+1/rowi How can I do it?

I was playing around with sorting and decided (yet again) that I was frustrated by some of the restrictions.  One thing led to another, and before I knew it, I was hip deep in ways to "improve" the lookup functions.    While contemplating Mathcad Zen Principles 3, 6, 7, 16, and 17, I wondered whether "unique" would be a worthwhile addition to the match/lookup modifiers.     Then my mind went blank when faced with how to handle NaNs.  In principle,  IEEE 754 NaNs are distinct.  And they would be if a standard Mathcad user had any way to distinguish between them, but they're harder to tell apart than Zathras and Zathras.  To the Mathcadder in the street, they might as well be indistinguishable, for all the good their distinctiveness does.   So, I've written two versions of unique to cater for both cases.   The question is which one would a user expect to be the default (and hence all lowercase) version?   I'v

I can't seem to create a scatter plot using a Chart Component.   Is there a way to do this?   

Is there a way to re-read Excel Data that has been imported into PTC Mathcad using READEXCEL? At the moment the only way I know how to re-read the Excel data is to delete the following and re-import:  

Hi there Why I'm having the wrong answer when calculating Re using (In) When Mathcad calculates it I get Re= 1.65 , however in my calculator I got Re=0.67 Thanks 

How is the person in this video creating a vector from the matrix?    What key sequence is used to achieve this?  https://youtu.be/Diq4hwvpPlw?si=SugsH3nFn_1xbJfR&t=34 

In Mathcad Prime how  do I specify that I want to establish a matrix that has 2 columns and 91 rows?

Readexcel not transferring correct values for scientific notation.  Below are example of change in the exponent from before to after;Before                                    After-4.30E-07-4,30E-05-4.26E-07-4.26E-05-4.13E-07-4.13E-05-3.92E-07-3.92E-05-3.62E-07-3.62E-05-3.23E-07-3.23E-05-2.77E-07-2.77E-05-2.22E-07-2.22E-05-1.58E-07-1.58E-05-8.67E-07-8.67E-04-6.96E-07-6.96E-058.08E-078.08E-04This results in a curve like this: I have found no way to correct the exponents on the two extreme points. The curve should be smooth. 

It says that I've reached the maximum number of license request available from my product type. Please help me

I am trying to use custom units in MCP v11. I have an included worksheet that includes a lot of domain-specific units and functions. This has been carried over from MCv15 and previous. I am now noticing that some of these definitions aren't working - I have distilled everything down to one simple example of success and failure, with no apparent reason why. See attached.I also tried to do my due diligence and see if anyone was reporting anything similar. Why there are lots of questions related to use of units, I didn't see a similar issue being reported.

MathCAD Experts,I'm trying to implement a model of a runaway reaction in MathCAD and I am stuck. I have tried everything including rewriting it several times to make sure that I don't have inconsistent units. I used the same variable definitions and then evaluated the derivative terms to make sure they were properly defined before defining them as functions. I thought I'd solved all my problems and now it's telling me that my initial conditions "aren't valid differential equations." Any advice would be most helpful.  I am using MathCAD 9.0.0Sincerely,Erik 

I need to write this equation this way > however the left part can't be written like ( 1/k)Thank you  

Hi there I tried to input the results from another mathcad file , but I guess I'm doing that wrong > in the following image I'm trying to import the results of ( R) What is the correct function to import the results from one mathcad file to another?When I searched in the community I found very old version which doesn't open in my laptop ThanksYusra