# Equation referencing in parentheses?

##### Asked by: Ashley Kraus

When referencing that equation in text, you simply **refer to it using the same label, also enclosed in parenthesis**. In your example, you might write this instead: “This is a fact related to equation (6) you passed many pages ago.”

## How do you refer an equation?

**As far as I know, the standard in mathematics is:**

- Put parentheses around equation numbers; don’t use the word “Equation” unless after a period.
- “Figure/Table/Algorithm X”, with no parentheses. Parentheses are reserved for equations, and square brackets for citations.

## How do you reference an equation in LyX?

To reference it, **add a label**. For formulas LyX will not propose a label name. You have to give one and you should keep the proposed prefix “eq:”. The label is displayed in LyX behind the equation number.

## How do you reference an equation in LaTeX?

- You can simple use \begin{align}x+y\label{eq:1}\end{align} and later use \ref{eq:1} or \eqref{eq:1} to reference to the equation. …
- You can put one label on each line and refer to a particular equation.

## How do you reference multiple equations in LaTeX?

You can then use **\cref{eq2,eq1,eq3,eq5,thm2,def1}** in order to do it. Show activity on this post. The amsmath package introduces the subequations environment. The first label, ‘all1’, before the \begin{align} , creates a label for the complete set of equations (1, in this case).

## How do you refer to an equation in overleaf?

Here we see how to create an equation using the \begin{equation} and \end{equation} commands. This equation is automatically numbered, and by including a \label command, we can refer to this number from anywhere within the rest of the document **using the \ref command**.

## Can an equation be a figure?

“Figure” is a broad term that covers any image, graph, diagram, etc. that is **neither a “table” nor an “equation”**.

## How do I use LyX?

LyX quick start:

If you have an existing LaTeX file and wish to modify it using LyX, just **start LyX, by typing “lyx” on the UNIX command line, and then import your LaTeX file** as shown below. (You can later export back to LaTeX if you wish.) If you wish to create a new LyX file, say x. lyx, simply type “lyx x.

## How do you prevent equation numbers in LaTeX?

**Do a \begin{align*} …** **\end{align*}** . That should do the trick. The “*” versions of the equation environments suppress numbers.

## How do you edit the preamble in LyX?

LyX hides LaTeX Preamble **under the menu option Document > Settings… > LaTeX Preamble**. If you add the line \input{options} , then you can outsource your custom preamble (e.g. all the packages you want to use, etc.) to the file options.

## How do you reference subsections in LaTeX?

In LaTeX you can easily reference a section by **using \label{} next to a section and then \ref{} to create the reference**. However, the reference only includes the number of the section, or the page with \pageref{} .

## How do you write a piecewise function in LaTeX?

*Function in latex. So we'll start by entering the dollar sign and then f of x like. This. Okay so the way i like to do my piecewise functions is i do it like this slash.*

## How do you write a piecewise function?

A piecewise function is a function built from pieces of different functions over different intervals. For example, we can make a piecewise function **f(x)** where f(x) = -9 when -9 < x ≤ -5, f(x) = 6 when -5 < x ≤ -1, and f(x) = -7 when -1

## How do you write a piecewise function on Desmos?

*Our function in this region. So when X is less than or equal to you actually type in the less than symbol and then just press equals on your keyboard.*

## How do you write a composite function in LaTeX?

In LaTeX equations, the symbol for the composition of two functions is **\circ (the circle)**. For example: g \circ h displays . In LaTeX equations, the symbol for the composition of two functions is \circ (the circle). For example: g \circ h displays .

## How do you find the composite function?

How Do You Find Composition of Functions? To evaluate a composite function f(g(x)) at some x = a, first compute g(a) by substituting x = a in the function g(x). Then substitute g(a) into the function f(x) by substituting x = g(a). In the same way, we can calculate g(f(a)) as well.

## How do you represent a vector in LaTeX?

LATEX 2ε provides the **\vec command** to represent vectors in math mode; $\vec{a}$, for example, produces a. In the author’s experience, vectors are more commonly represented either in bold face roman type or else by means of under- lining.