Symbol | Dot product |
---|---|

Type of symbol | Dot |

Package (requirement) | No |

Argument | No |

Latex command | `\cdot` |

Example | `a \cdot b` ⟶ a ⋅ b |

In mathematics, a dot product is an algebraic equation commonly used in a coordinate vector. No package is required to write this in Latex.

If you use `\cdot`

, the default command of latex, it will be printed in the document, but some people use the `.`

button on the keyboard, in which case the problem is shown below.

```
\documentclass{article}
\begin{document}
\[ \vec{a} . \vec{b} \]
\[ \textbf{A} . \textbf{B} \]
\[ \vec{A} . \hat{B} \]
\end{document}
```

**Output :**

As you can see in the example above, the output doesn’t look very professional for using the `.`

button on the keyboard, so it would be best practice if you use the `\cdot`

command.

```
\documentclass{article}
\usepackage{amsmath}
\begin{document}
\[ \vec{a} \cdot \vec{b} = |\vec{a}||\vec{b}|\cos\theta \]
\[ \textbf{A} \cdot \textbf{B}=|\textbf{A}||\textbf{B}|\cos\theta \]
\[ \vec{A} \cdot \hat{B} = |A||B|\cos\theta \]
\[ \frac{\textbf{a}\cdot\textbf{b}}{||\textbf{b}||}=||\textbf{a}||\cos\theta \]
\[ \begin{bmatrix} a\\ b\\ c \end{bmatrix} \cdot \begin{bmatrix} x\\ y\\ z \end{bmatrix} \]
\end{document}
```

**Output :**