Curve Fitting
I am trying to fit data to a logistic curve as shown in the attached file. However, "lgsfit" will not converge to an acceptable solution. When I plot the function that is returned, it is a very poor...
View Articleadding single line to a vector/matrix
Hello!I have a simple, but rather interesting question here: does anybody know, how to simply extend a vector (or matrix) with a single element (or line). Whenever I came to the point of adding one...
View ArticlePlacing multiple markers on a 2D plot
I have a fairly simple 2d plot and I want to place a few markers on it. It seems as though I can only have a maximum of 2 markers for each axis... but I need 5. Is there another way that I can add more...
View ArticleInstallation problems with Mathcad 15 / Windows 7
I have a student licence of Mathcad 15 and I am trying to install it to a computer with Windows 7 Home Premium 64-bit operating system and Intel-7 processor. The problem is, that the installation stops...
View ArticleOld MathCAD Library
Out of curiosity, what happened to the old MathCAD library?Not the resource center and not Knovel ...I was playing around with an old hard drive that had V8 installed. One of the links was to...
View ArticleDeleting Rows from Data Tables
I have created a Mathcad 14 sheet with a data table that I use to provide input variables. The number of rows of data in that data table vary from problem to problem, so I need to be able to increase...
View ArticleM12 running on Win7?
I'm having the same problem that an awful lot of people seem to be having - m12 installs just fin on a Win7 64-bit machine, but the program won't actually run. I installed .Net 1.1 and MsXML directly...
View ArticleIGetting Mathcad 12 to run
I'm trying to get a single user copy of Mathcad 12 to run on an old computer running Windows XP. I own copies of Mathcad 2.5, 4.0, 8.0 and 12. The program is going to be used in some work I am donating...
View ArticleDisplaying values in an equation
Hi! I am new at using PTC products, including PTC Mathcad.Few hours ago, I downloaded and installed Mathcad Prime 2.0, trial version, and of course I ended up with a problem.In fact, maybe it isn't a...
View Articlerendering xmcd file without Mathcad
Hi,is it possible to render a xmcd file readable without using mathcad? The intention is to use a requirements management system to store the source files and make them available for inspection and to...
View ArticleWill PTC ever port Mathcad to Max OS X?
Ever plan to release a Mac variant of Mathcad? A while ago I converted to Mac OS X, due to a very unpleasant Vista experience, after using exclusively Windows since the days of CPM. I plan to never...
View ArticleMatrix to vector (M2V)
Could someone help me to with drafting a simple short function that would be able to transform a large matrix into a vector - say M2V function. I need one M2V function for transforming matrix rows (row...
View ArticleMathematical constants
Does anyone remember the list of mathematical constants that were posted on the Mathcad website? Can anyone please tell me how I can locate that list? There were some pretty interesting constants like...
View ArticleFile saved yesterday. Opened today and only 5 of approximately 25 sheets remain
I have been building a worksheet for weeks now. I opened my document today and only 5 of my 27 pages remain. What does remain has to have the "F9" button pressed to calculate. It doesn't normally...
View ArticleUsing the Excel Add-In - By Loren Prentice article
I followed the procedure in the article, http://www.mathcad.com/support/item/jan_excel.asp, and discovered than when I changing the a and b values in the Excel worksheet the matrix does not change. I...
View ArticleHow important are calculators?
Of those of you who use calculators in your daily lives, how many use algebraic and how many use RPN? Do you care which you use, i.e., do you choose algebraic over RPN or vice versa, or is it simply a...
View ArticleMathematical ways to draw a heart
Thanks to @mathematicsprof for the reference, here are some fun ways to create a heart using math. http://www.mathematische-basteleien.de/heart.htm Can anyone create the three dimensional heart? -Dan
View ArticleInstallation problems with Mathcad 15 / Windows 7
I have a student licence of Mathcad 15 and I am trying to install it to a computer with Windows 7 Home Premium 64-bit operating system and Intel-7 processor. The problem is, that the installation stops...
View ArticleExcel blamed for multibillion dollar financial losses.
Interesting article in the New Statesman about the dangers of Excel, highlighting some of the problems with Excel workbooks, particularly it would seem the difficulty of validating them and the poor...
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Cylinder under external load
I am currently having trouble designing a reel winder in work, picture included below to help with the explanation. If you can imagine the wire coming off the bottom of the barrel and attached to a...
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