notebooks provide a sophisticated environment for creating technical documents. But particularly if you want to merge your work with existing material in TeX, you may find it convenient to use TeXForm
to convert expressions in Mathematica
into a form suitable for input to TeX.
In addition to being able to convert individual expressions to TeX, Mathematica
also provides capabilities for translating complete notebooks. These capabilities can usually be accessed from the ► menu in the notebook front end.