Mathcad

Hi   I have three variables in Inductance (L) value calculation for buck boost converter - Input Voltage, Output Voltage, Output Current. All three can vary. I would like to plot L value as a function of these three to determine the Worst case inductance requirement. In the attachment I have attempted 2D graph but how can look at sensitivity of L value this with 3 variables?    Regards Prasanna

Hello there, I have a drawing in autocad. Is it possible to connect both mathcad prime and autocad so that if i change my value in mathcad then the value in autocad change?   Thanks.

the tan of 45° = 1 What kind of function or formula should be needed in ptc to invers 1 into 45° ? thank you  Marco  

Dear Mr. Werner_E, & All friends in Mathcad Prime. Could you explain me, how to plotting array pile as show below picture to me please ? Thank you all friends in advance.      

Hi all friends, please help to explain me. how to plotting rectangular equation array to matrix ?

I am writing a system of equations and I want to plug values in for my remaining unknowns from a range of values and graph the resulting function. I actually want to have several variables be range variables while known variables are just one value. Do I need to build filler matrices for the single value variables to match up the matrix size or can MathCAD see the single variables as scalars to multiply by the matrices? I want to solve the system of equations with a brute force method instead of solving at many different points to cancel out variables. Any help is appreciated. I will be searching the help files until I get some help figuring this out.   PS in the example I set a range variable of step size 1 N/mm to 100 N/mm and have the other variables defined as single value variables but I get the error message "This value must be a scalar or a matrix"

Hi Everyone,   New MathCAD 15.0 user here having trouble resolving a “no solution was found” issue in the attached file. I'm trying to solve the equation for "y".   "x" is the independent variable and is greater than zero. All the Greek letters are constants that are also greater than zero.   From the looks of it, the solution should be some sort of Lambert-W function, and since everything is positive, the solution shouldn't have any imaginary component.   Any help would be appreciated!

Hello to all Mathcad professionnals I need your help again.   I need to calculate a drive torque for a wheel climbing a ramp. i can calculate this,  but my worksheet is not elegant and is heavy 😥 (probably, i'a m using matchad programmation not correctly)     Here is now i do The ramp is cylindrical profil in first time   now, i dicotomize a ramp ( arc lenght)   In second time. At this step, this is a mechanical problem I assume the ramp angle is simply a/2 . In fact, the ramp (red line, on the picture) is the tangent equation at the circle. the first point where we calculate a tangent is calculate with polar coordinates from dicotomized values.     I think my result its Ok but i want more 😁   I want calculate all Traction forces and all associated torques for all dicotomized value. in one program ? and i want to draw all result at this moment i am lost, can you help me thank   attacher P6 file  

1) I know four Prime numbers from Pi without point. Do you know more? 2) How we can find this numbers not manual - by programming? 3) It the problem correct and solved?

I am making the attached Mathcad 15 worksheet (Ring q Loading - Sin-Tangential Resistance - Uniform Varying Load.xmcd) available to anyone that needs such a tool. This worksheet is one of several that analyzes a structural ring stiffener (or bulkhead) given a general radial load pattern resisted by sine-tangential forces in the adjacent shell.  This is a common structural model fully explained in Roark's "Formulas for Stress and Strain" (any edition). Since I am new to this PTC community forum, I am using this worksheet as a test.  If this works, and/or the reports back from other members of the forum indicate an interest for other types of loading conditions, I will continue to post them. While this problem can be modelled using Finite Element Methods, the process is labor and time intensive, and would require frequent model alterations to converge to an efficient design. Also, the proper FEM boundary conditions needed for the sine-tangential resistance are very, VERY!, tric

Hi the MathCad community, once again I ask for help I want to calculate the wheel torque necessary for climbing a circular ramp. I can calculate this, but it's not elegant and heavy, because i don't use mathcad programation correctly.   first:   in second time, i dicotomize the arc lenght with step parameter      Now, this is a mechanical problem, i assume the wheel goes up the slope. The slope is the tangent equation at the coordinates point (from dicotomize function) And the slope angle is simply a/2    i think the result is OK   But i want more 😁   I want calculate all traction forces T and all torque C  for all dicotomized value in a (one ?) program. and after draw the result 🙄 and i'm lost to do this🤔   In the second step (after) : i have 2 drive wheels, the P force( f=ma) are apply in center line who link 2 wheels i want to calculate Normal Force (N) variation. Because, the wheel climbing ramp, the normal force are modi

Mathcad 5.0 installation 

Hi everyone,   I am trying to work in an exported file from Mathcad 15 M050 to Prime 6.0 I am working with symbolic expressions where I used prime variables to define velocities of an angle. In Mathcad 15, I use CTRL+F7 to add the apostrophe to the variable, but in Prime 6.0 it doesn´t act the same way. I tried to use the one in the "Operators" menu, but it doesn´t operate the symbolic expression the same way.    If anyone has a possible solution, I will appreciate it. Thanks in advance. I´ll add some images of part of my file, in Mathcad 15 and Prime 6.0  

Hi everyone, when I try to make a Mathcad15 object in Word, I do not get my calculations through. (See image 'Word', my 'c' isn't calculated) I already tried to reinstall Mathcad15 but that didn't work out. It's a very simple test calculation that doesn't go through. (see image) What I already noticed is when I use 'paste special' it doesn't show 'Mathcad object' but just 'Object' and I can't make an object link, but no idea if that is part of the problem. (see image) I also want to make it a link so I can refresh these calculations in my Word file. There are no issues on my collegues PC. Anyone had a similar issue or has a solution?   Thanks in advance, Arne

I am in need of Mathcad Trial version link which is valid for 30 days 

Author(s): Vladimir Kutcherova, Maria Morgunova, Valery Bessel, and Alexey Lopatin. Link: https://www.sciencedirect.com/science/article/pii/S2211467X2030064X Creative Commons. Source: Science Direct - Elsevier.   Karl Bogha Comments: This journal paper is of interest to engineers and businesses involved in natural gas and LNG markets. It is also of interest to general readers who have some basic understanding of commerce and use of similar energy resources at their local level be it at residential or industrial. In the news today Russia's energy supply to Europe and Asia is often seen on major TV news, online newspapers and magazines, and maybe by now a college level study.   Recently as March - July 2020 with Covid-19 impact on oil and gas businesses in US, and the drop in crude oil prices internationally, many small and medium size oil and gas companies have filed for bankruptcy protection in the US. This maybe one reason of interest to the reader and there may be relevant

Something like this?  

Requesting Tips, Tricks and Advice User Level:  Novice ... But have several    Subject: Pumps and Pump System Calculations I am working on some calculations templates for my daily work related to centrifugal pumps and pumping systems. I am having difficulty in developing a template that can display units in imperical and or metric units using normal industry standard formulas. I can fake it with MathCad but it does not look professional. Can someone provide me tips on the best way. Example Equations:1) Pump Brake Power (bop) = (Head [feet] * Flow [gpm] * SG) / (3960 * Pump Eff [%])2) Pump Pressure from Total Dynamic Head and SG [Specific Gravity]: Pressure [psi] = (TDH [ft]* SG)/2.313) Specific Gravity [SG, SSG, %CV or %CW]. Calculation liquid SG using any combination of Solids SG, Slurry SG, % concentration by volume and % concentration by weight.4) HazenWilliams methods with C value5) I have several very special proprietary (secret) imperical formulas that have been de

  I am a long time mathcad user.  After retirement in 2016, I purchased a permanent licence for mathcad prime 3.1.  It was working fine until recently, when the installation reverted to express mode.   my attempts to “re-activate” the installation to to full functionality have been unsuccessful. I have obtained licence files through the self-serve tools, but when I try to use them, I get a message stating that the server is unavailable or down.  Because I do not have an active support account, the PTC support team is inaccessible to me.   I find this to be maddening, because I have a permanent licence for Mathcad, I cannot get it to work, and I can’t find any help at PTC.   any suggestions or assistance would be appreciated    mike o’neill

I have just learned to use programs to write calculations.and I have 3 questions1.How can i write command to sum value in table from column A to column B2.How can i write Command to not be considered when numbering i=j3.How can i choose the lowest value from table with numberingThankyouSomkung

I opened Mathcad Prime 5.0 today and it opened as express.  I tried to reactivate the license, but it just tells me that the products are licensed.  I purchased the yearly subscription and I am due to renew on the 22nd, so it should still be active.  Not sure what to do.  I have the license file saved on the computer, and pointed the license manager to that file - but it stays in express.   What do I need to do?  

Hi, I am getting error like below; this function has the form f(potential) ---> current  but must have the form f(unitless)----> any 1   i am not sure why this error is coming; can anyone help to understand.

Hello everyone. I found out that the Rpm unit is not revolutions per minute, but radians per minute. So, could you please fix Russian localization from "об/мин" (обороты в минуту - revolutions per minute) for (радиан/минуту - radians). 21 pages of calculations became wrong when I realized it. Thanks a lot.  Alan

Someone else posed the question, "how do you get the equation to wrap down to the left margin when writing long equations" and I have the same problem. Someone answers "ctrl" + "enter" but that doesn't work for me and I'm not sure if it is because of my version. If I press "ctrl" + "enter" it just highlights the rest of the equation. I have MathCAD express prime 6 if that matters.

Dear All For the given attachment file how I can restrict the output results of minerr function to get positive only, as in my problem I need all the parameter that is calculated with minerr to be positive Regards Abdelazeem