*Chapter 1, Getting started with LaTeX, claimed that LaTeX offers excellent quality for mathematical typesetting. Now it's time to prove this.*

To make the most of LaTeX's capabilities, we shall learn how to perform the following:

- Writing basic formulas
- Embedding formulas within text and text within formulas
- Centering and numbering equations
- Aligning multi-line equations
- Typesetting math symbols such as roots, operators, Greek letters, and arrows
- Building fractions
- Stacking expressions
- Building matrices

That's a great undertaking—let's tackle it!

LaTeX knows three general **modes**:

- The
**paragraph mode**: The text is typeset as a sequence of words in lines, paragraphs, and pages. That's what we used until now. ...

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