The following are guidelines to help solve any problems you may have using this web site. If you cannot find the answer you need please send us your question and we will endeavor to answer it as quickly as possible.
They were removed in December 2019. As new devices like tablets and phones had to be supported, the print button on the applets became both difficult to implement and increasingly irrelevant. The best way to get a snapshot of the applet at any given time is the use a screen capture utility - which is built in to most operating systems. The advantage of doing it this way is that you get an image captured which can be printed or pased into any application.
For a summary of ways to do this see How to capture parts of the screen on this site.
If no animations are displayed on non-calculus pages:
The most common reason for this is that the browser is very old. The animations are written in HTML5, which was built into all current browsers a few years ago. Some older browsers however are still in use, and are no longer being updated. A common case is the Internet Explorer browser (IE) on Windows XP machines. There is no version of IE that runs on XP that supports HTML5. The solution is to install either Firefox browser or the Google Chrome browser (recommended).
You can download Chrome from the Google site.
The symptom of this is a blank animation window.
The calculus applets are written in Java, so the most likely cause is that the Java browser plugin is missing or disabled. There is a Java control panel that has the settings for this.
You can download Java from the Java site.
The calculus applets are now the only applets on the site written in Java. With each release of the Java plug-ins, they have become more and more paranoid about security, to the point now where they ask for your OK every single time you load an applet.