Automatic line-breaking in equations

Usually, we pay particular attention to formula design. In case of multiline formulas, we manually choose the best break point and where to align things. But imagine a long chain of calculations, such as in proofs or in math homework. It would be great if TeX could wrap displayed formulas as it does in case of normal text. And it's possible.

How to do it...

The breqn package is designed for exactly this purpose. This recipe will demonstrate it. We will use the beamer class because seminar slides are usually limited in terms of space. Follow these steps:

  1. Specify the document class:
    \documentclass[12pt]{beamer}
  2. As the beamer class uses sans-serif math font by default, we switch to the serif math font as in standard ...

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