Mathcad

Good morning, all. I need some guidance on the use of the Series command. I uinderstand the stricture of not expanding a Talyors Series too far, but I have a quotient with numerator and denonminator having many terms involving exp(x), cosh(x) etc, all based upon the exponential property. These should be solvable using expansions of exp(x) and the binomial theorem. Does Mathcad 15 or Prime have such built-in functionality built into Series to avoid Taylor?My equations contain data spanning dc to nanoseconds and I need more than a three term expansion.Practically the quotient expands into a ratio of terms involving root(s), the coomplex variable. After rationaliziing, I find thr LHP roots of the denominator and use a contour integral solution. I really need some help, here. Still pushing boundaries and learning at age 79!Thanks, John Archer.

I'm trying to get a solution to a system of equations. I've got two equations, two unknowns. I can use the solve function to get the answers, but have no way of saving those answers to a matrix that I can use further down the line. I've attached my MathCAD sheet. The function I'm having issues with is on the next to last page.Thanks for any help.Mike

Please is there anyone who kindly can tell me how to eliminate that annoyng flickers very evident when using multiple radio buttons associated with the same variable? Thank youF. M.

The purpose of this worksheet is to convert geographic coordinates between latitude/longitude (Lat/Lon) and Universal Transverse Mercator (UTM). This worksheet provides separate program functions to convert Lat/Lon coordinates to UTM and UTM coordinates to Lat/Lon. These two programs and the preliminary calculations for them use a truncated version of the Transverse Mercator flattening series derived by Johann Heinrich Louis Krüger in 1912. Results are accurate to about one millimeter within 3,000 km of a UTM Zone's central meridian. The ellipsoid data in this worksheet is for World Geodetic System 1984 (WGS 84), which is very close to North American Datum 1983 (NAD 83). This worksheet provides two data entry methods: internal tables and external Excel spreadsheets.This worksheet is in Mathcad Prime 3.0 format.  For users of other versions of Mathcad, the .zip file also contains a .pdf version.  The spreadsheet in the .zip file is used in the worksheet to read in data. 

Most of the time I use MC v.11, but I did not find (in my rapid checking) anything even in v. 15. Probably there is something in Prime, but it is not for me, yet. So here the inquiry.In other similar Math apps, there is a window or a command to list the variables used so far in the worksheet.How do MC users deal with it? So far I tried to keep up with the list of variables in a separate Excel file, or separate MC worksheet. But I also tought to use a vector in the same MC worksheet with an initial column vector of definitions and the command "stack" to update it, like this:ListV := ("v = velocity" "s =space")(and when a new variable is defined)ListV := stack (ListV, "a =acceleration") So anytime I type ListV I have the list of variables and a short definition of them (would be nice to have them in alphabetic order). Does anyone use a similar method or a better one? How does one deal with a worksheet with dozen if not hundred of variable definitions?Thanks for any feedback.

I tried to write a program using the attached algorithm. However I keep getting "This array index is invalid for this array" error. It occurs in various places when I try to fix it.

I've just started using MathCad, and I do not know why the Resultants1 variable is undefined (its probably some silly error, but its been frustrating me for a while now).Any help would be immensly appreciated.Thanks in advance all!

I would like to display an array of data with polar dependence in polar (r,phi) coordinates. The values of the data shall be color-coded. A single data point shall be represented by an area filled with the respective color. The center of the area is r_i, phi_1, the limits of the area is given by r_i +/-delta_r , phi_i +/- delta_phi. This data plot is typical for radars (PPI = plan position indicator). A example is enclosed. Any idea whether this is possible with Mathcad?

I spent 15 mins trying to understand how to do symbolic differentiation using the help files and some googling. I just wanted to check a correct differentiation, having spent money on Mathcad. Now I am sure it can do it, but it was not explicitly stated how to do diff, and all I could get was a repetition of the original function, which is no help at all. I went to wolfram alpha and got the anser in less than a minute. The writing is on the wall my friends....

Hello folks,I'm mystified. I'm trying to identify matching values in two different arrays (see attached file). Works fine when using match in a single equation, however fails when I let it run through a loop.It's probably me and I'd appreciate any help.RaikoP.S.MC15 on a win7, 64 bit machine.

Hello, this is my first post For two days I have trying to solve an ODE system. I suspect that the two equation are too complicated even to be calculated numerically. I managed to find a solution to one ODE using Odesolve built-in function.For information, look at the attached file.

HejI just downloaded Prime to try it out, and i like the layout and general feel a lot better than MathCad15, but I've run into a huge problem.I used the symbolic solve in 15 a lot, solving for a missing variable in an equation, where all others were defined with units and then using the normal '=' in the evaluation tab. Then 15 would combine the units and spit out a useable result, where I could change the units by writing the desired unit on the end. The picture below shows what i mean:Now trying to do the exact same thing in Prime 3.0 gives me the followingAny help would be appriciated!

I would like to display an array of data with polar dependence in polar (r,phi) coordinates. The values of the data shall be color-coded. A single data point shall be represented by an area filled with the respective color. The center of the area is r_i, phi_1, the limits of the area is given by r_i +/-delta_r , phi_i +/- delta_phi. This data plot is typical for radars (PPI = plan position indicator). Any idea whether this is possible with Mathcad? A example is enclosed.

How can we solve this problem in Mathcad?Help please.Data: The tank of water in which a piece of ice is placed. Water circulates. The outlet temperature from the tank is 5 °C and the input temperature is 22 °C.Objective: To describe mathematically the process of heat exchange in time between ice and water.

I have an issue in Mathcad that . is not recognized as decimal. See screenshot: All numbers to the right of . will be ignored. After restarting Mathcad problem seems resolved.

This worksheet gives the design principles of powerful electromagnet using Mathcad Prime 2.0. This is a water-cooled electromagnet using Hollow Copper Wire. The design may be used for other applications, like motors or transformers.The design combines both electrical and thermal analysis.

One picture from the article Interpolation, extrapolation, fittingorLies, damned lies, and statistics(http://twt.mpei.ac.ru/ochkov/students-eng.pdf)

I want to express additional y axis.it means that y axis exist two.Is it possible?

I want to find max value about omega when v is variable.I make solve block and I retrict each range.But I can't get omega max with variable v. In other words, I want to find max location about curves.

Hello. I tried to write implement a Gauss-Seidel Method, but got an error. I initialised all variables and wrote all the programming, which seems to be alright, but when I am trying to assign an element of previously initialised vector to a variable, it throws a "This value must be a vector" error. I have no idea why this is like that, I googled the manual about matrices and vectors and it says that Mathcad must recognise 3x1 matrices as column vectors.Moreover, the same code works in Mathcad 15 flawlessly (I have no possibility of using a code convertor included in Mathcad Prime).Any suggestions?

I'm trying to solve an equation & find 'natural frequency' i.e. Wn. I'm using 'angle criterion' formua:S = -0.1483 +/- 0.2143The only way I can find to enter the '+/-' symbol into a worksheet is to drag from; Help>Quicksheets>Extra Math Symbols. But when I attempt to enter the '0.2143' on the right hand side of the '+/-' it interprets the point (.) & puts the 2143 as a subscipt. Is what I'm trying to do possible in Mathcad? If so, how?

Hello all,I am trying to create a function that gives Vforward for a diode as a function of Iforward. Start with a log fit based on a series of data points taken from a datasheet which gives three coefficients to build the function.The function works fine if i keep eveything unitless, however I would very much prefer if the function takes current (A) and returns voltage (V)Any suggestions on how to modifiy the coefficients to achieve this?Thanks,David

Snell's law   Unable to play video. Please try again later.(view in My Videos)

After producing a Mathcad 15 plot on a Windows 8 computer, what is the best way to save a high-resolution (ideally 600 x 600) image of the plot on a PowerPoint 2007 slide?

I dont know what I do wrong:(Please look at this in xmcd