Bold math symbols in LaTeX math mode

In this tutorial, I am going to show you how to make bold math symbols in LaTeX for bold math mode. There are three different methods I am going to demonstrate that will make your math formulas and equations bold.

Method 1: Using \mathbf

In the example below, I am using the\mathbf command to make the math syntax:

$\mathbf{A + B = C}$

Here is the complete code:

\documentclass{article}
\begin{document}

Bold math syntax using mathbf:

$\mathbf{A + B = C}$

\end{document}

Method 2: Using \boldsymbol

The above method where I have used the \mathbf method will not be able to make the symbols bold. For this approach, you can use the \boldsymbolcommand as you can see in the example below:

$\boldsymbol{\alpha + \beta = \gamma}$

To use this command, you have to include the amsmath package. Below is given the complete document example:

\documentclass{article}
\usepackage{amsmath} 
\begin{document}

Bold math syntax using boldsymbol:

$\boldsymbol{\alpha + \beta = \gamma}$

\end{document}

Method 3: using bm package

With the help of bm package and using \bm command, you can make your math equations bold. This package allows you to bold any symbol, including Greek letters and complex formulas. In the following example you can see how to use this:

\usepackage{bm}
.
.
.
$\bm{\alpha + \beta}$

Complete document example:

\documentclass{article}
\usepackage{bm}

\begin{document}

Bold math syntax using bm package:

$\bm{\alpha + \beta}$

\end{document}