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GNU Emacs Calc 2.02 Manual

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11. Algebra

This section covers the Calc features that help you work with algebraic formulas. First, the general sub-formula selection mechanism is described; this works in conjunction with any Calc commands. Then, commands for specific algebraic operations are described. Finally, the flexible rewrite rule mechanism is discussed.

The algebraic commands use the a key prefix; selection commands use the j (for "just a letter that wasn't used for anything else") prefix.

See section 6.2 Editing Stack Entries, to see how to manipulate formulas using regular Emacs editing commands.

When doing algebraic work, you may find several of the Calculator's modes to be helpful, including algebraic-simplification mode (m A) or no-simplification mode (m O), algebraic-entry mode (m a), fraction mode (m f), and symbolic mode (m s). See section 7. Mode Settings, for discussions of these modes. You may also wish to select "big" display mode (d B). See section 7.8.1 Normal Language Modes.

11.1 Selecting Sub-Formulas  
11.2 Algebraic Manipulation  
11.3 Simplifying Formulas  
11.4 Polynomials  
11.5 Calculus  
11.6 Solving Equations  
11.7 Numerical Solutions  
11.8 Curve Fitting  
11.9 Summations  
11.10 Logical Operations  
11.11 Rewrite Rules  

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