Mathcad

I have a round paper for filtration with a fixed D.What size must have a cone for filtration with minimum time:We need numerical, graph & symbolic solutions!

Hello. I had a question.I want to make "C" by plusing A and BIt means that "B" from 2 rows(5) should add under 4 rows in "A" automatically.Could you help me?

The attached Prime 3.0 worksheet is a simplified version of what I am trying to do. I am working on a fairly lengthy program function that will accept single-column input arrays (vectors) of varying lengths (or even just a single number) and output an array with several elements. Input/output-wise, it is no different than the simple example in the attached worksheet.When I use the whole data array as the input, the output is an array with vertical subarrays for the three columns. When I use the data array one element at a time (range variable), the output is an array with horizontal subarrays for the rows. This makes sense to me, but it's not quite what I want. What I really want is a single array without subarrays so I can do other things with the output more easily. I don't see that Prime 3.0 has a simple function to "un-subarray" an array.I need some ideas on the best / most efficient / most elegent method for producing a single array from an array with subarrays.Thanks.

Hello,How can we convert a matrix (nxn) into a single column (vector)?Regards,Keshab

HelloI want to import the ground motion data from txt file. I have to escape first few lines of text in txt file then, read only the numeric value.Could you guide me how can I do it?Regards,Keshab

I am using MC v.11.2, and I attempted to plot a column vector (3x1), as one would do in Vector algebra.I saw in the forum for help, and I found the following method:1. Take the vector and turn it in the first row of a matrix of dimension 2x32. Place in the second row of the matrix the coordinates of the origin of the vector (in my case zero)3. Create a 3D Scatter (or Field) Plot and write the three columns of the above matrix.I tried in MC 15, and it works for more than one vector. I re-tried several times the same with v.11.2 and the following error is shown (see figure).I timidly ask:a) Is it possible to plot more than one vector in MC v.11.2 with the above method?b) If it is possibile with the method above, where is my error and how many vectors can one plot (I would need at least 3 or 4).c) If it is impossible, are there some other effective methods able to do it with MC v11.2?Thanks for any feedback. BTW, this is one field where MC lies behind as compare to competitors, where ther

Hi everyone, I am currently trying to design a framework by carrying out the Method of Joints and checking all forces on Mathcad. I have managed to get all calculations, however, when I input it into Mathcad, it came up as an error:"This calculation does not converge into a solution"I have attached the file and I would appreciate it if someone could tell me what the problem is.Thanks for your help in advance.

Hello all,I have been working on filtering an existing graph through a cosine filter in mathcad. I got a txt file (array) into the sheet and started filtering, but the challange that I am facing is the fact that I for an example file that is available to me am using a single current value at one particular point, whereas now in this case I want to filter an entire graph through a cosine filter. I am confused about the subscripts and can't figure out how to extend them accurately so that the cosine filter performs well. To point this out, Ismpl+spc is a single current value, whereas I am now in contrast working with an actual graph, rather than a single point ont the graph:

Hello,in the attached sheet ,please scroll down to the arrows. i have few questions regarding symbolic evaluation? Thank you!

Has anyone else been having trouble with the links in the Mathcad Prime 3.0 "News and Information" sidebar? Many times when I click on one of the "find out more" links, all I get is a page that says, "Sorry! We can't find your page." Thanks!

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.