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The AutoCAD file format is not to be confused with the DWG (drawing) format used in most CAD programs. AutoCAD is not a CAD or computer-aided manufacturing (CAM) package, though it can be used to design parts of a CAM system. AutoCAD can also be used to make 2D visualizations of 3D objects or to create presentation graphics.

Some companies have specialized software to convert AutoCAD DWG files into STEP (ISO 10303) files for CAM, while others are developing CAM systems that will use the DWG format natively.

AutoCAD and its successors are powerful CAD tools that cost thousands of dollars depending on the number of users and their level of access. An upgraded version of the software, called AutoCAD LT, is free for small-business users and is available in both on-premises and cloud versions. AutoCAD LT was recently superseded by the Windows-only AutoCAD 2019 application.

AutoCAD Key Features

Easy to Learn

AutoCAD is easy to learn because all the commands are done with the mouse, and the menus are well organized.

Edit Text and Graphics

AutoCAD lets you edit text and graphics at the same time by double-clicking to select them. You can also rotate, scale, and color text and graphics.

Graphical Design Tools

AutoCAD’s drawing tools give you the ability to create 2D and 3D diagrams and drawings using shapes, text, and colors.

Annotate Your Drawings

You can add 2D and 3D annotations such as dimensions, perspective views, and schedules to your drawings.


AutoCAD is compatible with most CAM systems, including Siemens NX, Inventor, Creo, and EAGLE.


You can use AutoCAD LT to design, draft, and visualize your designs using mobile devices such as smartphones and tablets.

Help System

AutoCAD has a powerful Help system that lets you access online tutorials for most commands and functions in the program.

Advanced Tutorials

AutoCAD offers advanced tutorials on virtually every feature and command in the software.

3D Printing

In 2018, the software was updated to let you 3D print models that you design.

You can read more detailed information on AutoCAD’s capabilities in

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Microsoft.NET Framework Microsoft has integrated the AutoCAD API in its development of AutoCAD LT, an AutoCAD add-in for Microsoft Windows that runs AutoCAD-compatible files and programmatically interfaces to AutoCAD LT. Microsoft.NET Framework services can run directly on a machine’s operating system and integrate with AutoCAD LT via the AutoCAD Integration Services, which also enables AutoCAD LT to interface with third-party systems.
COM Automation Technology (COM-AT) – COM Automation Technology (COM-AT) is the API set for Win32 C++ automation developed by Inventor Systems and partners and was first presented in 1998 at COMDEX. Inventor Systems has provided APIs that allow third-party developers to create COM-based AutoCAD extensions called add-ons. AutoCAD Xpress, Inventor’s first AutoCAD add-on, was introduced in the Autodesk Exchange App Catalog in 1999.

AutoCAD supports various modes for working with drawings. The following table lists the available modes and their default parameters.

File operations

File-based operations

Xref operations


Imagery operations are used to manage image files. When an image is created, the source image file is saved along with its data in the image. Xref files link from the source image and its data in the image to the destination image and its data. The map layers and data in a source image can be copied to a destination image. These operations are done through the use of the following functions:
Draw lines (pline) between points in two drawings.
Draw vector lines between points in a drawing or two drawings.
Draw vector lines from one or more points in a drawing to the display surface.
Add notes, dimensions, and annotative objects to a drawing.
Delete lines, polygons, and annotation objects.
Copy, move, rotate, resize, and mirror objects.
Copy, move, rotate, resize, and mirror map layers.
Save a new version of a drawing.


AutoCAD originally started as a CAD/CAM system with 2D (2-Dimensional) capabilities. It was designed by Klemens Dassow, and was named “DasCAD” (German for “DasKD”, or “This CAD”). The Dassow system was not designed for large companies like

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I had the same issue when trying to update it on a 64-bit machine. I was able to install the Autocad Insight Beta 2 program on 64-bit 10.5.7 Mac using the following instructions:
Install Acrobat and AutoCAD from the App Store.
Run the following Terminal commands:

Remove all Autocad and AutoCAD folders and documents from /Applications/
Unzip the Autocad file in /Applications/
Move the Autocad Insight folder to your Desktop
Copy the.pkg from the Autocad Insight Installer that you extracted from the Autocad into /Applications
Move the Autocad folder from /Applications/ to /Applications/
Make sure that you have the proper permissions for the new Autocad Insight folder.

I did not follow any other steps beyond the ones above because the instructions I found were not fully detailed or clear.


Explicit definition of Newton’s Method

I want to explicitly write Newton’s method as an iterative method to solve
$x_{n+1} = x_n – f(x_n) = x_n – {x_n}^3 + 3x_n^2$
I tried the following:
$x_{n+1} = x_n – f(x_n) = x_n – x_n^3 + 3x_n^2$
Let $f(x) = x^3 + 3x^2$
I have no idea how to define $f(x_n)$


In your work you write $f(x_n)$ but the $f$ is not defined by $x$ but by $x^3$ so $f(x) = x^3 + 3x^2$


Why use a (linearized) differential equation for an iterative method?

I was reading about an iterative method (O’Shea’s, for example) for solving differential equations. The iterative method is said to use a particular differential equation (in this case a linear differential equation) so that the convergence of the method is guaranteed.

What’s New In?

Enhanced EFI Services:

Get answers to your questions quickly and efficiently, by searching the IntelliSpace and AutoCAD Help systems for related information. (video: 1:29 min.)

Modeling Customization in UCS:

Create and maintain multiple UCS systems at once. Modify the UCS settings of your entire drawing. Keep settings consistent throughout your entire drawing project, or change them as you work.

Project settings for non-AutoCAD users (video: 1:43 min.)

Buildings in the Cloud:

Stay on top of your project, on any device or desktop. Bring buildings into the cloud, and collaborate on designs with ease.

Design Features in AutoCAD 2023:

Easy customization of pen settings.

High-performance tools for scale animation, dynamic drawing, and geometry optimization.

High-performance renderers with support for realistic lighting, reflectance, and shadows.

Paint, plot, and measurement tools in the Properties palette, enhanced for professional designers.

Improved visual and interaction design with new design guides, Smart Guides, enhanced 2D annotation, and Quick Select.

Fast sharing of drawings and models with fileshare as an option.

Integrated Microsoft Exchange and Office 365 for fast collaboration.

System Requirements for AutoCAD 2023

Windows 7, Windows 8, and Windows 10: 32-bit or 64-bit edition

Microsoft Office 2010 SP3 or later: 32-bit or 64-bit edition

Hardware Requirements:

Processor: 2 GHz or faster

RAM: 3 GB or more

Storage: 2 GB or more

Video: Windows XP and Windows Vista compatible video card.

Software Requirements:

AutoCAD® 2023

Microsoft® AutoCAD® for Windows® and AutoCAD® for Windows® 64-bit are registered trademarks of Autodesk, Inc., and may not be used without the authorization of Autodesk, Inc. Microsoft and Windows are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries. Autodesk and Civil 3D are registered trademarks or trademarks of Autodesk, Inc. and/or its subsidiaries in the United States and/or other countries.

For more information visit the Autodesk® website

Printer and Postscript requirements for

System Requirements For AutoCAD:

Mac OS X 10.9 or later
Intel-based Mac with 2GB of RAM
Intel Mac or PowerPC G4 Mac with 1GB of RAM
A non-AGP video card capable of rendering 1280×800 with 16-bit color
Mac OS X 10.10 or later
Intel-based Mac with 4GB of RAM
Intel Mac or PowerPC G5 Mac with 2GB of RAM
A non-AGP video card capable of rendering 1600×1200 with 16-bit