Mathcad

Hello All, Sorry for previous posts did not tag a answer, I am a newbie, will not happen again haha. For this post I am trying to read through some previous mathcad solutions and am unsure what this syntax means, does anyone have any idea? Is it saying if mod(j,2)=0 AND mod(j,4)=2,-1,1) then return 0 (screenshot 1)? I have a older version of mathcad so I am also unsure how to write this in my version (screenshot 2). I have also attached the problem document where I found this (PDF).  Best Regards.

can you help me, sir, for solving this problem, I want to solve (Icr) term?  

Hi All, I need help in achieving some calculation, which involves multiple looping inside.I am attaching the Mathcad sheet with some description of what I need t to achieve inside.I appreciate any approach through looping/ programming etc.   Thanks a lot

Relatively new user of MathCAD here. I am trying to define a series of piecewise functions using if functions, then plot them by evaluating the function over a vector with a simple programming loop. When I define the input vector (i.e. the x points) using elipses like so:   x:= 0 ft, 0.05ft .. 9.25 ft   , I get an error. When I manually define an input vector ("Matrix/Tables" tab, "Insert Matrix") it works. Two questions:   1) Why is this? What is different between the two definitions of the input x vector? 2) Is there a more efficient way to define the input vector than manually defining a matrix? Is there a more efficient way to be doing this in general?   Okay, so I lied about only 2 questions. My worksheet is attached.   Thanks,   - Kevin

Dear community,   I have a weird problem during installation of Mathcad Prime 5.0 Express. On three machines with Win10 the installation gets stucked at the "Application Selection". It does not show the list to select an application and I can not process with the installation. It's just an white empty screen. I had Mathcad Prime 4.0 installed before and uninstalled it.   What can I do to install Mathcad Prime 5.0?   Yours, Robert  

Hi, In Mathcad 15 there is a warning (green underline) when using a duplicate variable name. Is this possible in Prime 7?    

So my starting parameters are P1= 7.5 kW and n1= 750 rpm.   On the left side Mathcad is converting my units to SI which messes with my final results.   For this formula I have to use P1 in kW and n in rpm, which mathcad is changing into W and revolution per second. Right side is how to calculation is supposed to be going by the formula.   Is there a way I can fix this? I saw that in Mathcad 15 you could define a custom unit system. Is there anything like that for Mathcad Prime? Thank you!          

Hey Community!! I am using Mathcad in my work place and one of the problem requires extremely complicated solve blocks. The Solve block that I am working has near to 20 equations and 20 unknowns, it used to shoot errors that the units are not compatible, which I diagnosed after some work, but now the solve block works but the never end up getting solution. When I calculate the problem for a single point in an other Mathcad sheet it works very fast and nice. But when it is combined with equations in a solve block, it never finds a solution instead shoots error ("Solution not found, change guess value or tolerances"). I did try changing the guess values, nothing works and tolerance is set to 10^-1, the maximum that it could be set for. What should I do in such case? I used the guess values from my single point solution.I cannot upload the entire mathcad file because of company's privacy matters but I can attach screen shots.Thanks in Advance.    

HI Help with finding matching values:    

Why is the Symbolic engine of Mathcad 15 and Prime so lazy, why should I work for its?Luc! What about Mathcad 11 with Maple  Symbolic engine?   Mathcad Prime and meMaple

Hello, In the attached sheet, I want to plot Impact factor vs [h/delta static] but unable to. I am sure there is an easier and better way than i did so far. i saved the file as Mathcad 11.   Thanks, Sam

I need not simple solution, but best solution! Слабо?

Hello all, I hope you all are well.   Today my issue is the use of sbval to solve this 2nd order ODE. I have tried to follow solution steps published by other Mathcad users but I can't help but think the solver is getting stuck in a divide by zero or something equivalent? I have tried a couple different ways to define the function. Let me know what you think. 

Hello Community, I have been trying to access Refprop (Excel add-in) from MATHCAD Prime 6.0 through Excel Component. My requirement is Excel should take the input from MATHCAD and will paste the output generated in Excel back into MATHCAD. While executing, I found that it is writing the input in Excel given through MATHCAD but not calling the updated output values in EXCEL back into MATHCAD and showing the error. Later on, I found that it is entirely removing the VBA code for the required property function that's why it is showing an error.   Can I get an idea that how can I tackle this problem? or Is there any other way to integrate Refprop in MATHCAD? Could you please help as it will be part of my project?

This system has not solution. The lsolve must return an error message, not solution! What do you think about this?

The committee to collect data in the field of science and technology (www.CODATA.org) produces every four years a list with redefined values of several physical constants. In the 2010 list, for example, you can find redefined values of constants, including the uncertainty parameters. So you can find the value of the fine structure constant, which is used in atomic physics, with reduced uncertainty. Furthermore, there is the specified Planck constant, which relates the energy of electromagnetic radiation to its frequency. These changes also affected the Avogadro number, showing the number of particles in one mole of a substance, and the Boltzmann constant, the binding energy and temperature. Redefined values of the constants, especially of the Avogadro constant and the Boltzmann constant were seen by physicists as a signal to update the international system of units (SI), which will be discussed in 2014. This will primarily affect the five units - amperes, moles, kilogram, kelvin and pa

I was reading a science fiction ebook and an exchange along the lines of,   "I'm afraid we may have a mole or two in our midst." "You mean spies?"   caught my eye.  And, I couldn't help it, I thought "A mole of spies ... that sounds like an awful lot of spies. Surely somebody would have noticed before then?".  That's the danger of having, a few minutes previously, read a post by @ValeryOchkov on units and Avogadro's number[1].     So, by the titular abuse of notation, ...     There you have it.  The world population is about 13 femtomoles and, in case you were wondering, the total number of humans estimated to have existed is 166 femtomoles.  And as if I didn't feel insignificant enough before, I certainly do after noting that I'm only 1.6 yoctomoles - thank you very much Mathcad Prime Express 7.    ... maybe I've made a typo somewhere and it should be an ego-boosting megamole?   By a great effort of will

Quora shows interesting math. Prime 7 can show third equation is also pi. I want to calculate until and   does not show pi/2      need very long time to solve.

HiI get positive and negative result for my answer  which is understandable but I only want the positive result to display.

Hello. I am looking for some assistance with for loops and matrices within Mathcad. I have a relatively basic knowledge of mathcad so this may be a straightforward solution.   I am trying to return a value for m11 for each of the sigma(11) values. However, the way i have it set up, it only returns the m11 value when i = 2.  I know i could list the equation out 3 times, changing the "i" with 0, 1, and 2 each time; however i had thought i may be able to do the same thing using the for loop function. Thank you.  

I am trying to solve an equation like:   this one can't be solved analytically and a priori the solve block does not work correctly (in the way I use it. see attached file Any idea how to solve this equation

Hello!   I am trying to sum up all the values of the given function f(x) by using the summation operator.  Variable "x" has assigned values in vector form. How do I proceed here?   Please, take a look at the attached file (Mathcad Prime 6).   Best regards, Sergey 

Why is there a minus sign and not a plus sign.I heard that this is some kind of military secret of the British - the enemy did not know the true height of the soldiers!  And more: F - feet, I - inch, F - ? Fraction?      

To all,   I am playing around the 'Singular Value Decomposition' in mcad 15 (function sdv2). Follow the example and all good . Get S, U and V matrices What is the correct syntax to use the data to solve {y}=[A]{f}? see attached I know it’s a dumb question but the obvious syntax f = svd2(H)y does not work !   Thanks

I would like to hide the variable name and only show the result of an equation.  I've seen several ways to do this in MathCAD 15, but we've switched over to Prime.  Is there a way to do this in prime?     For my specific application I'd like to show the result of a previously evaluated equation in line with some text so that my wording incorporates the result of my math.