How to Write Eta Symbol (η) in LaTeX

In LaTeX, you can write the eta symbol using the \eta command for the lowercase eta (η) and the \Eta command for the uppercase eta (Η).

The following examples show how to write the eta symbol in LaTeX.

How to Write the Eta Symbol in Text

We can use the \eta command to write the lowercase eta symbol in LaTeX document for text.

Suppose we want to write the eta symbol in the text.

We can use the following LaTeX code to do so:

\documentclass{article}
\begin{document}

This is an example of using the eta symbol \(\eta\) in a sentence.

\end{document}

Output: 👇️

This is an example of using the eta symbol η in a sentence.

In this example, we use the \eta command to display the lowercase eta symbol in the text.

How to Write the Eta Symbol in Mathematical Expressions

For mathematical expressions, we can use the \eta command to ensure proper formatting.

Suppose we would like to write mathematical expressions that contain the eta symbol.

We can use the following LaTeX code to do so:

\documentclass{article}
\begin{document}

An inline mathematical expression: \( \alpha + \beta = \eta \).

A displayed mathematical expression:
\[
\alpha^2 + \beta^2 = \eta^2
\]

\end{document}

Output: 👇️

In this example, we use the \eta command to denote the eta symbol in both inline and displayed mathematical expressions.

Conclusion

We can use the \eta command for both text and mathematical expressions. This ensures that the eta symbol is properly formatted and displayed in LaTeX document.