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# Mathcad Tips

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## What's New In PTC Mathcad Prime 9

What's new in PTC Mathcad Prime 9 blog, interview, and webinar. Out now!
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## PTC Mathcad Community Challenge Index and Guidelines

PTC Mathcad Community Challenge is a bimonthly event where we pose a math problem for you to collaborate and solve using Mathcad Prime.
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## PTC Community Spotlight: Tetsuro Tokoro (ttokoro)

Professor Tetsuro Tokoro (ttokoro on the PTC Community) is a member of the Institute of Electrical Engineers of Japan (IEEJ), and he has dedicated much of his time to teaching and studying electric circuit design for his college students at Japan’s National Institute of Technology (KOSEN), Gifu College.   A true man of math, ttokoro finds helping community members solve their problems to be very fun. He seeks out math-based brain teasers and shares them with the Mathcad community to gain the insights of his kind and very intelligent fellow Mathcad users. These include resistor meshes (including in 3D), perfect squared squares, and a puzzle where you must identify the minimum radius on a circle with n number of points where all distances between points must be an integer. Sometimes, he looks for problems on rosettacode.org to solve.   According to ttokoro, many of these problems are unique and won’t be found in a textbook (and many math textbooks in use were written before math software came to the scene) but demonstrate the value of math software. Ttokoro ventures to say that a lot of these problems cannot be solved by hand, or at least it would be unviable to do so, especially for students. Instead, Mathcad and its programming operators must be used to solve these problems.   Montage of resistor meshes and other fun problems ttokoro has introduced   Beginning in 2021, ttokoro has also become a prolific uploader of Japanese PTC Mathcad content on YouTube. Many of these videos share tips or are tie-ins to the puzzles he or others post on the PTC Community, including the Mathcad Community Challenges.   Ttokoro’s best resistor 3D mesh electric circuit. (Each edge is made by one ohm. Find the resistance between Node [0,0,0] and [1,1,2].)   Ttokoro first started using Mathcad with Mathcad 12, and his biggest requests for Mathcad Prime features are transparent colour availability and for the Animation tool to return. You’ll notice that in his brain teasers, as well as in his submissions to the Mathcad Community Challenges, ttokoro likes to show results with plots because it helps convey the meaning better than with math results alone and having more tools to show the results via images helps with that. This sort of thinking carries over to his academic work as well.   Ttokoro wearing his PTC Champion Jacket and PTC Mathcad T- shirt!   Thank you for your enthusiasm for math and contributions to the PTC Community, ttokoro!
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## Registration Open for the Mathcad Virtual Conference 2022!

Registration has opened for the Mathcad Virtual Conference 2022! Happening September 13, 2022, 10:00 Eastern time.   This will be our third annual Mathcad conference, and this year we're promising to talk only about information with demos that you will find valuable and interesting. You'll hear from... Brian Thompson, Mathcad general manager, introducing the show and discussing the current state of Mathcad Andrew McGough, Mathcad product manager, presenting an updated Mathcad Prime roadmap, along with world-premiere demos of some of the new functionality coming to next year's Mathcad Prime 9 Anji Seberino, Mathcad application engineer, showcasing Mathcad Prime's powerful design of experiments functionality Anna Novikova, Mathcad software engineer, deeply detailing the improvements made to Mathcad Prime 8's numeric and symbolic engines (including some enhancements that were not documented in Mathcad Help) A Mathcad customer and how Mathcad Prime powers his innovative structural engineering start-up Throughout the conference, you'll get to share your feedback to PTC about the sessions. We'll also be manning a text-based Q&A box. And if you are within the first 500 registrants, you will be able to have your chance to win a raffle to win one of 25 brand-new 100% cotton Mathcad T-shirts. PTC hasn't had new Mathcad merchandise in about a decade, but now we do, and these shirts are quite wonderful. The raffle numbers will be drawn using a Mathcad Prime program during the conference.   We hope to see you there! And if you aren't able to make it on the day of, we are recording the sessions and will send you the recordings afterward. We really hope that you'll find this to be the best Mathcad conference that we've ever hosted.       (view in My Videos)
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## Mathcad Scripted Control design Working Group

PTC has a Mathcad Scripted Control design Working Group for implementing scripted controls in Mathcad Prime 10.
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## Mathcad Community Challenge September 2022 - Resistors in Parallel

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 example of three resistors in parallel, as drawn in Creo Schematics:   Find the Mathcad Community Challenge Guidelines here!
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## Mathcad Community Challenge July 2022 - Area of a Spherical Triangle

This month's challenge is another geometry-based challenge - but it's non-Euclidean geometry. Given the following three points on a circle of radius 10 units, calculate the area of the spherical triangle: (5.339, 6.948, 4.819) (-4.018, -3.703, 8.375) (6.455, -6.679, -3.705) (Note that the point coordinates are rounded to three decimal places.)   Optional: Can you write a program or function that calculates the area for any three points on the surface? Is there a symbolic evaluation for three generic points (a,b,c), (d,e,f), and (g,h,k)?   Here is a 3D model in Creo 9 of the sphere and points:   Find the Mathcad Community Challenge Guidelines here!   Edit: the coordinates of the second point were incorrect. Wildly incorrect. I have no idea how I wrote down the wrong numbers.
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## Mathcad Community Challenge May 2022 - An Isoperimetric Geometry Problem

The first two challenges were biased towards mechanical engineering. May’s challenge pertains to geometry. Create a worksheet in which you calculate (1) the diameter of a circle and (2) the length of a side of a square that yields the minimum combined area for a combined perimeter of 1 meter. This is an optimization problem. What tools within Mathcad can provide you with a result? Optional: How can you depict the results? Can you use a 2D plot or Chart Component to visualize the answer? Find the Mathcad Community Challenge Guidelines here!
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## Transferring Mathcad Single User or Student license from an existing Host ID to a new Host ID

Solution: Mathcad Single User and Student Licenses can be transferred by using the link.  Select the version and enter the product code  Enter the new HOST ID onto which the license needs to be transferred - To correctly identify the Host ID on new machine, go to Windows Start > Programs > Accessories > Command Prompt > type ipconfig/all (ENTER) and with the Physical Address below the Ethernet adapter Local Area Connection there stands the Host ID -  Click on #Submit Request Below is the sample email triggered with new HOST ID license file (attachment)    Please save this license file to a secure location on your computer.
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## Why Mathcad Prime 8: A Chat with Andy McGough

PTC Mathcad Prime 8 has now released!   @CatMcchad a quick interview with PTC Mathcad's product manager, @amcgough, for this blog article about what's new and exciting in Mathcad Prime 8, what new functionality users and veterans will look forward to using, and how the Mathcad team decides what new functionality to put into each release. Much of that is customer-driven, and Andy cited several delivered requests from the Mathcad Ideas board on this very community. Read the interview here: https://www.mathcad.com/en/blogs/why-prime8-andy-mcgough     Andy will also be available next week (March 22 at 10:00 Eastern) for a webinar about what's new in Mathcad Prime 8, featuring demos of the new functionality, plus a live Q&A portion with Andy that yours truly will be moderating. Register for that here (or catch the replay-on-demand after the fact): https://www.mathcad.com/en/resources/webcast/whats-new-mathcad-8   Happy calculating~
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## Mathcad Community Challenge March 2022 - Planetary Gear Calculator

Let’s face it, planetary gears are cool. They are used in all kinds of mechanisms, including transmissions, motors, and turbines. Your challenge, should you choose to accept it, is to use Mathcad to build a worksheet that calculates the gear ratios and output speeds of a planetary gear under different configurations. The math behind the gear ratios is straightforward. But users should be able to select: The sun or planet carrier as the input; The planet carrier or ring as the output; and, The ring, sun, or planet carrier as the stationary component. How can the user select the desired component? How can you add intelligence to the worksheet to prevent an incorrect combination of input, output, and stationary? What inputs do you want for your calculator? You will have to make some choices. Your choices could include: Number of planets Number of teeth Component diameters Module / pitch Tools that you might consider include Combo boxes, programs, and functions involving strings. Here are some technical references to get you started: KHK Gears Instructables How Stuff Works Once again, this is a great project for students to work on in teams. Make the worksheet as simple or as complicated as you want. Others can build on your work, and you can build on others. Let’s see what the community can create! Good luck!   Find the Mathcad Community Challenge Guidelines here!
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## For the Love of Mathcad ❤

(Made in PTC Mathcad Prime 7)
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## What's in Mathcad Prime 8? SNEAK PEEK

Hi all! I'm pleased to announce that while Mathcad Prime 8 is releasing March 2022, we at PTC have just published a blog article letting you all know in advance what is being included! And PTC Community are the first ones to know. Check it out: https://www.mathcad.com/en/blogs/whats-mathcad-prime8   We'll post another announcement when Mathcad Prime 8 is actually released.   In the meantime, we've opened up registration for our accompanying What's New in Mathcad Prime 8 webinar coming March 22, 2022. I plan to moderate it, with Mathcad product manager Andrew McGough demoing the functionality in much more detail. The webinar will end with a live question and answer session.   Mathcad Prime 8 Webinar March 22   (Note that I'm not able to answer your Mathcad Prime 8 questions on this post, but Andy will certainly be able to in that webinar.)   Thanks!
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## Mathcad Community Challenge January 2022

Mathcad Contest Idea - January 2022 Plane Truss Mechanics Can you use Mathcad to solve this problem?   This comes from page 88 of “An Introduction to the Mechanics of Solids,” by Stephen H. Crandall, Norman C. Dahl, and Thomas J. Lardner. This was the text for the first mechanical engineering class (2.01 Mechanics) that I took my sophomore year at MIT way back in 1989. You can find the book for as little as \$5 on Amazon. It shows three different solutions for the problem, including: closed-form solutions involving equilibrium of forces and the beam-deflection equation a computer program called IBM STRESS Castigliano’s theorem which solves via elastic energy. Any introductory mechanics text or a Schaum’s Outline should guide you to a solution. As with the other contests that will follow this one, the point is not the answer to the problem, but your execution of the solution. Some ideas you may consider including in your worksheet: Allowing the user to change the material via a Combo Box Input Controls. Depicting the results with a Chart Component, such as the truss in the deformed shape, or the deflection at D due to changing input loads. Making the problem more open-ended, such as using matrices and programming for different geometry and loading. Note that these are just ideas; I have not tried any of these. Maybe you can explore different approaches. The problem is simply a starting point. This is an excellent problem for a team to solve, especially for civil and mechanical engineering students. How would you tackle this problem in Mathcad?   Find the Mathcad Community Challenge Guidelines here!
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## PTC Community Spotlight: Professor Valery Ochkov

A Mathcad user for 25 years, Professor Valery (‘Val’) Ochkov takes to the mountains when not involved in developing training and educational software for fossil and nuclear power plants.  He’s shown below in the Chimbulak region of Kazakstahn.   Val has long been involved in the Mathcad community! See the photo of the “Mathcad Clock.”       This is from a post back in 2010!  Beyond answering questions, Valery is also known for using math equations to create designs and authoring Mathcad trivia challenges for other community members to participate in. Some of the more entertaining challenges might be the Hare and Snell’s law and the Problem of Cockroach Races.  The Bicycle Post where Valery quizzes the community on how to solve “How many strokes with a bicycle pump need to be done to inflate the tire to 5atm” also inspired engagement. When asked for hobbies that don’t involve hiking boots, Val assured us his hobbies really are writing books and articles about Mathcad.   He’s now deeply interested in using Mathcad for STEM education, the subject of his latest book, 2⁵ Problems for STEM Education 2 (2020). He says collaborations with community members were critical to developing the material.  Way to go Mathcad Community!  Keep Collaborating! Keep engaging and great things like a book is born!
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## "My Top 3 Engineering Nightmares" Interview

https://www.engineering.com/story/my-top-3-engineering-nightmares-expert-shares-the-truth-on-software-selection   Anji Seberino, the head of our PTC Mathcad Application Engineer team, recently took some time to interview with engineering.com about her top 3 engineering nightmares accumulated from her own experience as an engineer. From missing units to debugging custom code to trying to reverse engineer IP stored in crazy, inherited spreadsheets, you too have probably faced these issues in your time in the industry when not everyone is using the right software and processes.   Let us know what you think of the interview!
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## "For Power Mathematics, Retire the Spreadsheet" with Brian Thompson

I'm sharing a recent long-form interview that PTC's CAD/engineering calculations general manager, Brian Thompson, had with engineering.com: https://www.engineering.com/story/video/for-power-mathematics-retire-the-spreadsheet Alongside with the video interview, there is also a written transcript. You don't have to share any of your own information to access it.   For Power Mathematics, Retire the Spreadsheet   Brian talked through a wide variety of topics, including why engineers and research scientists across many various industries choose PTC Mathcad and how those customers use it, the old and painful days of trying to perform complex calculations in spreadsheets, and some glimpses into the future of Mathcad.
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## Official PTC Mathcad 15 and Prime 1–6 End-of-Sale Announcement

Hi Mathcad community members,   For those of you who don't know me (some do), my name is Andrew McGough and I'm the product manager for Mathcad here at PTC. I have talked to some of you in the past individually, but I don't get to participate as much as I'd like on the community. I hope this announcement is the start of me being able to be more active here.   I would like to share with you that PTC is announcing the end-of-sale for the following versions of PTC Mathcad, effective December 31, 2021:   Mathcad 15  Mathcad Prime 1.0 – Prime 6.0     Effective January 1, 2022, the only version of PTC Mathcad available for subscription will be PTC Mathcad Prime 7 and future versions of PTC Mathcad Prime. After December 31, 2021, PTC will no longer have the right to sell or distribute software versions moving to end of sale due to a third-party component contained in those versions.    I appreciate the passion of our Mathcad userbase, so I would like to pass along some additional information on a helpful offer. If you currently have a subscription license and wish to continue using your current version of PTC Mathcad while you evaluate Mathcad Prime 7, we are offering a multi-year renewal option that will give you the ability to use your current version for up to four additional years. If you decide to take advantage of this offer, it is important to place the order prior to December 7, 2021 to ensure no issues in booking the order or the subscription start date. PTC may decline or be unable to process orders received after that date. Please contact your PTC account representative or PTC partner for more information.    Please bear in mind that the use of old versions of software does introduce implicit risk in areas of security, hardware, and software platform support.    PTC will continue to provide technical support access, phone assistance and expert input for versions of Mathcad that have reached end-of-sale. PTC will not be able to issue new licenses or provide access to software downloads for end-of-sale versions.    Our customers in English-speaking countries received the End-of-Sale announcement on February 17, 2021. Our global customers are receiving the localized communication now.    We have put together multiple resources for you to answer your questions. Please refer to our FAQ for more information. We know this is a big change so the Mathcad team will be monitoring this thread for feedback.   Best regards,  Andrew McGough,  Product Manager, PTC
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## Converting .mcd to .mcdx

We received an email inquiry which I had forwarded to a Mathcad product manager. I thought it may be useful for others, too, so instead of just emailing the response to the customer, I am posting it here as well.   ------- We need to convert .mcd to .mcdx...We have Prime 6.0.0.0 What do we need and how much does the program cost to do this conversion. ------- The .mcdx file format is Mathcad Prime. The .mcd file format is for earlier versions of the legacy software, later versions of the legacy software use the .xmcd file format.   If this customer uses Mathcad Prime 6.0 there is a converter that comes with the software they can use to convert all .xmcd and most .mcd files to .mcdx - ‘most’ .mcd as we only go back as far as something like legacy Mathcad 7, which was late 90’s I think.   From the Input/Output tab in Mathcad Prime 6.0 they can find an ‘xmcd/mcd converter’ button - clicking that will open the converter. They will need the latest version of Mathcad 15.0 (M050) for that to work, and they can download that currently from the support software download site (Prime 7.0 converter does not need Mathcad 15.0 for the converter to work). -------- Hope this helps! For additional questions, don't hesitate to open a Support ticket!
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## GET A PTC MATHCAD EDUCATION: Fundamentals of Data Analysis

Are you making the most of your engineering calculation software? Join a free webcast exploring the fundamentals of data analysis. Presented by Anji Seberino, PTC’s leading Mathcad expert, the online event takes place Thursday, June 25 at 10 am PDT and 1 pm EDT.   REGISTER NOW!   Anji will focus the session on the basic principles of analyzing data in Mathcad. You’ll learn about Interpolating data Filtering data Fitting data to a curve   This webcast is part of the weekly education series for engineers who want to learn more about PTC Mathcad as a powerful alternative for engineering calculations. Visit the registration page to view weekly topics and sign up today to join in.
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## GET A PTC MATHCAD EDUCATION: Solving and Optimization

Are you making the most of your engineering calculation software? REGISTER NOW for a free webcast that explores solving and optimization. Presented by Anji Seberino, PTC’s leading Mathcad expert, the online event takes place Thursday, June 18 at 10 am PDT and 1 pm EDT.   Anji will focus the session on solving linear and nonlinear systems. Plus, you’ll learn how to set up and solve optimization problems.   This webcast is part of the weekly education series for engineers who want to learn more about PTC Mathcad as a powerful alternative for engineering calculations. Visit the registration page to view weekly topics and sign up today to join in.   REGISTER NOW!
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