Mathcad

Somehow I am not getting the function to work in 15. Can someone help on this. 

When I converted a trial version of 8.0 to a licensed version, the legacy converter was not enabled, and this means 20 years of Mathcad 2001i Professional programs are not available.  There is a drop-down menu comment that 'setup' should be run again to enable the legacy conversion option.  I see no 'setup.exe' anywhere in the 8.0 files.  Does this mean that you have to download a new version of Mathcad 8.0?  Why is this not a default load since it is one of the dropdown menu options?  

Hi Everyone,  In my MATHCAD Solveblock, I have four implicit equations, with four independent variables, whereby I need to find a solution to those variables.  The four independent variables are as follows:  1. Angle, β  2. Angle, Φ 3. Length, a  4, Length, b  In addition to that I have a couple of constraints for these values as well.  The PROBLEM that I am facing currently is the fact that the 4 variables above do not converge to single final values, as it is highly dependent on the guess values that I initially enter into the SolveBlock. In other words, if I change any one of the guess values for any of the 4 variables, the final value for the variables are change drastically.  I have attached my file in this post for review. Hoping someone could help me with this!

Can anyone help with a problem I'm having with with a Given function inside a loop as shown below:The function Fopt is defined previously. The steps work correctly one at time when f1 is not an indexed function but it won't work as shown. Any suggestions? 

It seems that I have a corrupted mathcad file. I get the following error message when I try to open it. I am using version 15. Is there a way to fix this, I've attached the file.

I'm having trouble returning an array for a term in an equation. I have a spreadsheet that should generate a P-M diagram for a column. It correctly calculates the array of P values, The spreadsheet will return an array of M values, but they are incorrect. When picking the equation for M apart bit by bit, I have found that one term returns a scalar value rather than an array. Preceding calculations for this term correctly return arrays, but this one does not. The term in question in the attached file is c*((ri^2) - y^2). Even when I rewrite the variable c in terms of y, it still returns the same single number. For reference, when y= -11.5, the correct value should be 0, and when y= -11.25, the correct value for the term above should be 18.876 in^3. What am I doing incorrectly? 

A simple equation solved symbolically for an unknown variable returns two results, - as expected.However I know the result lies in the range 0 - 1.If I add an 'assume' modifier to limit the result to the value <1, I get quite an unexpected result.The units are obviously causing all sorts of mayhem.What's going on here?

I do not understand why the result being returned is a vector.  I am passing a value for both R and Y

I am not getting why this is evaluating in such a way in Mathcad 15

As per the original post..   Andy, my situation is similar to Jamie’s. I bought a single perpetual license (at least that is what I thought I purchased) many years ago and therfore I have no SCN or an SON number, only the product key. Now I have a new computer and due to the current situation I can’t get a new license file. Can you forward me to the customer/technical support, so that my mathcad 15 license will be transferred to my new computer.   Michael

Has anyone got an example of successfully getting sbval to work? I keep getting  : I am playing with a 5th-order non-linear system. Many thanks in advance!

Hello MathCAD People, I am working on a shaft redesign project, and I start out with trying to plot the deflection of a more simplified model. I write the momentum function in Macaulay’s method and think plotting a deflection curve using odesolve should be a fast way to figure out where the max deflection happens by solving the differential equation and the boundary conditions. However, the plot just ended up with part of the deflection curve and say the ode function has limited range. Can you guys help resolve the error and get Mathcad plot the full cure?I really appreciate if you can guide me through this problem, as I really need a math model to validate my simulation results. Thank you in advance. 

Given  Soln x=1 and x=-1 I have tried the solve box - the answer depends on the seed value.      Best approach to solve in Mathcad?  Thanks.

I am not able to locate any checkbox in prime as it used to be there in Mathcad 15 to compute for 0/0How can I have this checked? 

I have a series of about 40 Mathcad files that I must open, calculate, and save in sequence to obtain a final result.  Any change in file inputs for one worksheet in the series, results in having to run the series of files forward again to obtain the new final result.  Is it possible to create a master Mathcad worksheet that will automate the task of opening, calculating, and saving the worksheets in sequence, so I will not have to do this in a manual manner?

Hi,I am new to this Mathcad prime earlier I use Mathcad 15, I am trying to solve this equation in the Mathcad prime, but I am not getting the value, I also searched on the net but didn't find any proper solution.Please help me to solve this issue.To find the vale of the (an) The file is attached

Hi guys I have issue with matrix multiplications.Please see the file and (hope) help me with it. Best regards Andrzej

Hi Everyone, I am sure I am not the first to ask but could not find any information on this issue. How can I have mathcad to show the matrix value after having the variable in combo box. Also, is there any option wherin prime will open all the worksheets in draft view? 

Hello, sorry if this isn't the correct place to post but please help me out. I have the following eqn. X:= a + b <= c + d = 0 How do I get X to be defined as the lesser of the two. I want it to be defined as C+D if it is smaller, Not 0 or 1.It is only returning 0 or 1 depending on if the statement is true or false.  

I want to add hand drawn circuit diagrams in a Mathcad worksheet using an HP tilt pen.Is this possible?

When setting up a Mathcad Prime 8 document which makes use of specified Input / Output parameters, I've noticed that while Input Parameters have their default alias in the designation list be the same as their name in the document (entirely sensible), Output Parameters default to having the name "out" and alias "out_x" with x counting up. Does anyone know of a way to make the default alias be the same as the name of the parameter similar to Inputs? Screenshots of my lovely Inputs and less lovely Outputs included below.  Thanks in advance.

MathCAD is changing or not recognizing the unit of measure. The answer would be 28000 MPa

I am getting error units are not compatible for the said equations and not unable to figure out the way to solve it. Any help is appreciated 

I'm wanting to generate spice models in MathCad Prime worksheets. The problem I'm having is I can't seem to find a way to substitute the value of a variable into a text block.I calculate some variables such as: Model_Name:="HDS10M"Nf=2.4Isf=1.86e-7 Then I want to create a text block that contains something like this. .model Model_Name diode(N=value(Nf) Is=value(Isf)... ) but I want this to be displayed in the worksheet so I can just copy and paste it into a text file to have a model.. .model HDS10M diode(N=2.4 Is=1.86e-7) This would be very useful when there are a bunch of parameters like in a FET model or in a subcircuit to eliminate opportunity for human error. Is there any way to do this? Best Regards,Chris

Good morning,  I am running some deeper simulations in P8 and noted that the CPU grind was pretty fast. I was surprised at this and ran a simple side-by-side with compiled C on a simple summation test.  I found that the slowdown ratio was only about x25.  In similar tests, I have found Python to be about x200 to x500.  I'd be interested to know how P8 has achieved this.  Perhaps the developers could comment.  Here is the C++ project   /* time example */ #include <stdio.h> /* printf */ #include <time.h> /* time_t, struct tm, difftime, time, mktime */ #include <iostream> double F_SUM() { double SUM = 0; for (long i = 0; i < 1000000000; i++) { SUM += i; } return SUM; } int main() { //clock_t clock(void) returns the number of clock ticks elapsed since the program was launched.To get the number of seconds used by the CPU you will need to divide by CLOCKS_PER_SEC clock_t t_STR; clock_t t_END; dou