Mathcad

hi, i seem to have run into a bug with mathcad 15 plotting. i'm sure there is a way around it. however, i don't know how to do it. i put the question in the file. it's near the bottom of the file. i think there needs to be an if statement that checks to see if both elements of the matrix are negative. if so, make them positive. the matrix with the problem is called 'mode1'. sorry, the file is kind of a mess right now. i want to clean it up and post it as an update to a very old thread on here. i was able to take something someone posted 'pre mathcad 15' and get it working with mathcad 15. however, i wanted to get this plotting glitch fixed before i did that. i also found that a number of the eigenvalue and eigenvector functions have bugs as well. luckily, the ones i used in this file seem to work good. thanks, anthony

That is the mistake  //Mathcad 14  

Hi, I'm new to mathcad and can't seem to use an old file to the new Prime 8.0. Can anyone please help me convert the file so that I can run it in the prime? Or any online converter that I can use?

Hello, Mathcad Version 8.0.0.0 I am trying to assign the results of a symbolically solved equation to a variable so I can use that value later in my Mathcad sheet. Does anyone know if this is possible? I have included an example sheet of the problem I am facing.  As background, the reviewing parties for our calculations are used to hand calculations so I am trying to stick to the formatting in my attached sheet as it is very similar to how you would write this problem up by hand. Unfortunately, some people are stuck in their ways. Thanks!

I have just noticed that the lower case φ is on a different key than the capital Φ. Is this on purpose? Has anybody noticed other mismatches? Raiko P.S. Running Prime 8 on a Win 10 machine

Is it possible to keep on adding output of excel files with change in output to one single output file? For e.g. there is a input file which provides the data and evaluating the worksheet will give excel output. What I want to have is when the input is changes it overwrites the excel output but i ant to have the calculation written in next row of excel document like it used to do in Mathcad 15. I tried but could not achieve it. Can someone please share the sample worksheet with this behavior?  Austin 

I seem to have found a bug in Prime 4.0.  When specifying an array of 4767 elements it stops working.  But only if the program is defined as [a  b]:=, it works fine if it's a:=.  This picture explains it better than I can.  So, I have a work around, but my questions are: a.) It's a bug, right? b.) Any reason why it would do that?     Thanks,

Hi, Everyone.From the following: How to solve, the Matrix [3x3] ? Thanks in advance for your time and help.Best Regards.Loi.  

Hi, Everyone.From the following: The question is: How to find the solution [ A B C ] ?Thanks in advance for your time and help.Best Regards.Loi.

I have the following scriptSo, C is a vector with symbolic equations, and q is the vector with symbols. Now I would like to solve for q. However, that does not seem the work. Is there a way to make this work?

Presenting different input choices:    

Hello Experts, When I am trying to use summation instead of giving one single value it is giving me table as output can someone please help 

Hi, newbie here.As now, in midst preparing the power cable ampacity calculation, somehow, required loop calculation process at the end section. Here it goes.1) Assume the θsc (pic 1)2) Then several calculation in the middle to get the ampacity value. (pic 2)3) Once current (I) value obtained, the θsc required to be calculated as per red mark above. 4) When θsc calculated, it required to be linked and to be used as input in item (1) above (and so on until) the θsc in item 1 and item 2 comes with 0 difference.5) Calculation sheet as attached. Thanks. 

Hello,In mathcad-15,  Is there away i can get it to display yield mode (Z1m, Z1s, ZII, ZIIIm,ZIIIs...) that associated with or corresponding to the smallest value? For example, when ts=0.125, the smallest value is (198), so the yield mode (ZIIIs), and when ts=0.313, the yield mode corresponding to the smallest value (231) is (ZIV) and so on. Thank you,Sam  

Hi, So I'm struggling to understand exactly what is the issue that is occurring that is stopping the system of equations below from solving. I know that it is solvable, I did it by hand, and I have the answers for verification. However, it is in the software claiming to be unsolvable. Am I entering it in improperly? 

Hi. I am trying to export data to redraw Figures in Excel or Origin Pro after getting a suitable result from the plot, but it is really difficult for me. Can you give me some advice? Thank you so much.

Hello, how should i properly set array index, so that my sequence is calculated? 

How do I increase the number of significant digits displayed in tables.  The default seems to be 4.  I want to see 12.  2.9857555555 is displayed as 2.986. Thanks

How can I get only the positive solution for symbolic evaluated equation. I want to use the function "Z(a,s,x) in the equation for Max and return only result.

This month’s challenge is related to electrical engineering. We have a simple circuit with an electrical potential of 220 Volts. Initially we have a single 10 Ohm resistor. Then we add a second resistor in parallel, with 10% higher resistance. Then we add a third resistor in parallel, with 10% higher resistance than the previous resistor. And so on. Calculate the current in the circuit for the single resistor case. Calculate the resistance of each additional resistor and current through each resistor for 2, 3, 4, 5, and 10 resistors in parallel. Can you write a function or program that calculates the resistance of each resistor and current through each resistor for n resistors in parallel? These calculations are fairly straightforward, so it will be interesting to see what tools – vectors, matrices, loops, plots, charts, etc. – that you use to solve the problem. As always, how you document your calculations is important as your worksheet will be visible to the community. Here is an e

Analysis of the same electrical network of the previous examples, with the fundamental mesh method. Attached is the worksheet. 

Hi! Why, in figure 29 of the attached worksheet, do the phases not coincide? And in general, if I have made any mistakes please let me know. Thanks very much to those who will answer.

Hello...just started back into MC and have a question re; this error I'm getting re: a summation:Why does is it say the variable is undefined when it IS defined? what am i missing?I enclosed a snapshot of what i'm talking aboutThanks for any help?

Although I can create a plot, I am not able to format it. The Symbol, Line Style, Color Scheme, Trace Thickness, and Surface Fill options are all grayed out. Only can change Trace Color.

Hello everyone. I publish a work done with MATHCAD 15. I don't think you can do the same with PRIME. What do you think about it?