This means that you can freely mix in mathematical expressions using the. In general the output of a cell comes from any text data specifically printed during the cells execution as well as the value of the last line in the cell be it a lone variable a function call or something else. Most import this post is showing you the basics about math symbols in Latex.
Or enter in display math mode by writing between.
Did you know that Jupyter Notebook has built-in LaTeX support. Very very quickly this is how you can switch to markdown mode in Jupyter. The Jupyter Notebook uses MathJax to render LaTeX inside HTML Markdown. The Markdown parser included in the Jupyter Notebook is MathJax-aware.