Mathcad

I'm seminew to Mathcad, and I know my question is fairly basic, however, I was not able to find the answer either through google nor through clicking around in the PTC online manual.   This is my first attempt at making vectorized calculations, however, I keep failing doing them. The program simply shuts me down by giving me the error message that I must use a matrix or a scalar.   The equation I try to do is fairly straightforward:   1) Define a vector with a range x:=1..5 2) Implement an equation H*sin(x/L*pi) everything works swell, until I try to save that value, simply by putting something in front of it. Let's say: y:=H*sin(x/L*pi) At this point it suddenly decides to tell me no, it must be a scalar, I'm not allowed to do this.   What's the reason? How do I get around it? Second question: Is it possible to have a simple index system such as x(1), rather than x_1? I haven't figured the indexing system at all, btw. Everytime I try to call any of the vector value

Hi, does fact2 (n) not work? or, isn't correct, the use I make of it?

Hi, I'd like to split the numeric solution of my equation to show the influence of the two factors without having the define new variables. I need to keep it as simple has possible. See p.7  For exemple ;  uc = 3 + 0.5   (where 3 is the section a and 0.5 the section b) uc = 3.5    Thank you ! Camille  

Any Science and Engineering student, and Professional.   Basic efficiency and interconnections of a combined cycle power plant provided in this PDF file. This field continues to grow.   Job opportunities are many for the graduating engineer and other discipline graduates. This file may generate your interest, to take up power plant studies be it solar, wind, combined power plant, or other power plants. Much use of software there is to take up calculations in Prime-Mathcad. Including data analysis and interface. A brief introduction to a major German engineering combined cycle power plant project completion in Egypt is provided.    Any errors and omissions apologies in advance.       Regards, Karl.    

Hello All,     I am struggling to find the proper code for solving a system of non linear equations, using Mathcad 15.     The equation are given in the screenshot below. The problem is related to thermodynamics.       I followed a template with Find, however it just don't get me anywhere.     What needs to be done to get the results ? Can someone explain the issue (for the layman).      Thanks for the support,      keep safe,   System of equations      Result sough PA (Pas in code) and PS (Ps in code).      Once PA and PS are available; related parameters "aS", "aA" (aA and aS in code) and x calculations are straightforward.   Code (Mathcad file attached)          

Energy/Mechanical Engineering Students and Professionals. Year: 3 and 4 of 4 year program in Mechanical Engineering. Power Plant.   Attached file is an Exergy Analysis on a combined cycle power plant. Followed by a few example exercises. Done in Excel you may complete it in Prime-Mathcad. You may take it further in Prime. Zoom in when reading PDF file.       Regards, Karl.  

For Energy/Mechanical Engineering Students. Level UG Year: 2 and 3 of 4 year engineering program. Power Plant. Step by step calculations on a full cycle.   The design process requires you select the plant, each plant has its pressure-temperature settings/requirements, you then follow through the full calculation process using tables.   Steam plants have come thru with higher efficiencies, and their use remains stable and in some regions increased. The increase is primarily due to combined cycle power plants operations.   This was done in Excel. You may use it for course work or review.Prime-Mathcad may be applied for this whole process, you can take it further.   Zoom in when reading the PDF file. Apologies in advance for any errors and omissions.   Regards, Karl.  

Dear Colleagues!   There were several questions related to building hysteresis loops. Recently, I have published the article “An improved parametric model for hysteresis loop approximation” that deals with the problem.   AbstractA number of improvements have been added to the existing analytical model of hysteresis loops defined in parametric form. In particular, three phase shifts are included in the model, which permits us to tilt the hysteresis loop smoothly by the required angle at the split point as well as to smoothly change the curvature of the loop. As a result, the error of approximation of a hysteresis loop by the improved model does not exceed 1%, which is several times less than the error of the existing model. The improved model is capable of approximating most of the known types of rate-independent symmetrical hysteresis loops encountered in the practice of physical measurements. The model allows building smooth, piecewise-linear, hybrid, minor, mirror-reflected

Hi, How do I calculate the other root?

I have a series of plots similar to the one below with multiple peaks and troughs. I want to get the values of the peaks and troughs and their x coordinate. The only way I can think to do it is to use max to find the value of the biggest peak, remove that section of data, find the next and so on. This is tedious and I have many to do. There must be a better way. Can someone show me what it is. Worksheet is attached.     

Hi, Distractedly, I used the "solve" operator to solve the given polynomial equation. It gives a solution but the answer is not complete. Why solve does not give the correct answer?

QM Demystified A Self Teaching Guide by David McMahon. I purchased thisbook in 2007. Read chapter 1 and 2 in that year. Did not get past chapter 2, but did complete chapter 2. May had gotten busy with other things, most probably found the subject matter incomprehensible, difficult, tough, .... This book made it possible for me to understand the basic mathematics required for the topic. I revisited it again in 2019 and 2020, as you can see.Had it not been for David McMahon's book, Schrodinger Equation may not been a subject matter I could understand. I admit I may still be incomplete on its understanding. So there maybe mistakes here that you can easily spot. Apologies in advance.Example were needed to supplement the theory, this is why this book was suitable for me. There are a few examples from other textbook(s) in the study notes.Its mainly the mathematics technique required and applied to understand some of the undergraduate Schrodinger Equation subject matter.Approximately 85 pages

Color picture and Mathcad 15/Prime 6 sheets of the article and the book.

Introduction to poles and zeros based on notes made from Engineering Circuit Analysis, 4th ed Hyat and Kemmerly. McGrawHill.   Study notes on poles and zeros. You are welcome to correct it for yourself. Series RL circuit was straight forward but the parallel LC circuit needed more looking into by myself. Poles and Zeros continue on in Higher Order RLC circuits and Laplace Circuit Analysis. You probably know more about it than me.             Regards, Karl.    

Hi, I asked to solved C3 in a simple equation and then it tels me that C3 is undefined. I do not understand, because I did defined C3 with my equality where I find it's value.   Thank you 

Can the MathCAD Prime API print (or export to PDF) via the API?

Hi, I would like to have the answer to this very simple equation with only 4 decimals. Also, is there a way not to show the units ?  Thank you   Camille 

The product calendar now shows an estimated release date of September.  I've heard nothing about what's coming; as is tradition.  However, I have had tech support contact me that a very old bug I reported is fixed in 7.  (screen shifting).  I suspect pulldown menus are coming as that was something planned for 6 but didn't make it.    

to all   I think I had an example of what I am attempting but lost hard drive a while ago means I have lost it. I would like to use indexing in a Given block. Please see attached. Can this be done if so what is the correct mathcad 15 syntax? Aim is to return a vector of solution for each index i   Thanks Regards

Can someone convert this mcdx file into a Math 15 file?

to all, A bit of an open question as I do not know how to go about solving the following – if it can be done at all I have a curve C1, define between [x1,xn] and I would like to create a curve C2 using N pts so that some criteria are met. Essentially is a “double optimisation” problem. Consider the following; I want C2 to be made of p points p(xi,yi) – Generally a few points (say no more than 10) Criteria 1:-  xn > xn-1 > x1 . xn and x1 are given Criteria 2: In a given x range [xn,x+1] rms C1 ~ rms C2 . Within a given a tolerance (say +/-1%).   Is there of way of using Mathcad to find the best pair of points to meet criteria #2 Does it require some sort of loop, or is there some built-in optimisation tool one can use Attached a mcad 15 file swith some preliminary stuff - Not much

Jacobi method - show all the partial solution of the sys. iteration by iteration   Hello, I want to out put all the partial solution of the sys. iteration by iteration in a table (or m x n matrix):   itr     x1    x2    x3    x4 0      ...    ...    ....    .... 1    ....    ....    ....    .... - - - - - - - - - - - - - - - - - itr    ....    ....    ....    ....     Also i don't know why in my file does not accept itr->0   instead accept begining from itr->1.  I attached the file.    

Sorry, I have asked about it here and Alan has answered. But! I have x1, y1, z1 and x2, y2, z2. How can I plot a line in 3D between those two points (# 7 in the picture). Mathcad 15 sheet please!  

I've added the following solution to the Rosetta Code task: : Generate Lower Case ASCII Alphabet       References: 1. http://www.rosettacode.org/wiki/Generate_lower_case_ASCII_alphabet2. http://www.rosettacode.org/wiki/Generate_lower_case_ASCII_alphabet#Mathcad   Please feel free to add your own versions, additional to or replacing mine if they're an improvement.   Cheers,   Stuart   (I was going to use succ to generate the sequence of characters, but didn't in the end.  I'm just too idle to remove succ from the worksheet)

I have inserted 2 AutoCAD LT drawings into a file and every time I open it the drawing is missing?