Hello how are you? :)

Today I will tell you how to create a sub-equation environment, and how to declare matrices and some variants of these. Let's start!!!

The subequation environment

This environment allows us to put multiple equations in a single place. We need to declare the subequation environment and then put each equation in an equation environment

\begin{subequations}
    \begin{equation}
        Equation 1
    \end{equation}
...
    \begin{equation}
        Equation n
    \end{equation}
\end{subequations}

Produces

But what if we want a subequation not numbered, well we just use the equation* environment

Produces

Remember that you can label any equation in this environment, you can check how to label here or you can check how to label here

Matrices

The commands to create a matrix are similar to the table environment, but here you do not need to declare the number of columns.

• We use & to declare the columns
• We use \\ to declare a new row

You need to put these matrix environments inside a math environment

The most simple command is matrix

Produces

Wait, this is not a matrix!!! where are the parentheses?

Well, there are other matrix environments, let's see

Produces

Thanks, this is all for today

Do not forget to follow me on Twitter @latexteada