Software or hardware

 

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for doing mathematics

 

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for writing it

 

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for teaching

These links eventually lead to manufacturers' or distributors' websites.  The products' help systems are your primary source of information about their use.  If you can't find a solution to your problem there or in a product manual, you may find help in a "knowledge base" maintained on the manufacturer's website by its support staff.  If that fails, enter a concise description of your problem in an Internet search engine—particularly www.google.com or one based on it.  It may locate part of an Internet discussion group's correspondence on the product.  You may be able to locate the group's website and secure further help.

In most cases you can find a text that serves as an expanded product manual or as a guide to applying it in a particular area of mathematics.

 

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