# Tagged Questions

{equations} is about the various environments to typeset displaystyle mathematics, e.g. equation and {align}. For general questions about mathematical typesetting use {math-mode}. Both tags are possible on the same question.

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### How to multiply a fraction

I have an equation in which inside I have a fraction. I want to put a number (3.3) that indicates multiplication. \begin{eqnarray} \phantom{0}LOD = \frac{\phantom{0}S}{N} = 0.1\phantom{0} \si{\ng/\...
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### Two equations in align environment with bracket in between

How can I type such an equation into a LaTeX align environment, with a bracket between the two lines of the equation?
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### Combine split and align environment

The split environment allows you to give one number to two equations, as in $$\begin{split} a&=1+2+3+4\\ b&=5+6+7+8 \end{split}$$ which gives Note that the ...
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### How to place braces in multiple equations

I have the following expression: \begin{aligned} %C1 \sum_{i = 1}^{m}{y^{C_1}_i} &= m\beta_0^{C_1} + \beta_1^{C_1}\sum_{i = 1}^{m}{x_{i1}^{C_1}} + \cdots + \beta_q^{C_1}\sum_{i = ...
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### Aligning labels inside cases environment

I have the following code, where I have multiple cases and all need to be labelled. I tried using subnumcases, however I wanted some freedom in labelling (the $k^{th}$ case must be labelled C.k etc), ...
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### Keep text with previous line - LaTeX equation and next sentence

What I am trying to do is probably very similar to the "Keep with next/previous" in MS Word. I have an equation and its description in two consecutive lines. I would like the two lines to shift to the ...
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### increase space between brace and equation

Using the package mathtools the output of this code $\begin{dcases*} l_{\epsilon} = (l_ul_d)^{1/2}\\ l_k = min(l_u,l_k) \end{dcases*}$ is the following Is there ...
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### flalign is not aligning equations to the left [duplicate]

I'm trying to align my equations to the left, for this I'm using \begin{flalign*}, but as you see, below the matrices the equations are not being aligned, how can I fix this? This is the result I ...
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### Aligning system of equilibrium equations

I would like to align equations on the right side to this imaginary red line (to the left). Also, it would be really nice to have just one number of the equation (just like in equation environment) ...
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### Undefined control sequence error

it might be a stupid question but I cannot see where the mistake is in this code: \documentclass[12pt]{article} \usepackage{amssymb} \renewcommand{\baselinestretch}{1.5} \setlength{\topmargin}{0cm} ...
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### Trouble submitting paper to arXiv - labels except in equations

I submitted my tex file with figures to the Arxiv. References and figures are well referenced, but equations no. When I compile the tex file in my computer using, \label{eq:1} ...
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### How to do an equation correctly if the formula won't accept it?

I do have two formulas in my text and the only way I could make them work is in a way with a lot of escaping commands. Now the formula looks correct but whenever I try to add an equation to make it ...
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### Brace in the same column

I have a problem with set of equations. To wit: I would like to set a braces in the same column, but I have no idea how to meki it. Belowe I enclose a code. \usepackage{amsmath} \usepackage{array}...
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### How to align two sets of equation separated by some text in a beamer slide?

I want to align the two set of equations on same slide. I found a similar post How to align a set of multiline equations but there the equations do not involve text as in this case Here is my MWE \...
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### How to align equations with integrals and “subject to” equations

I have a long expression (maximization problem) which I force down to the next line using //. I also have two functions ("subject to") which I want to place underneath. I use & to make the ...
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### What kind of images does Latex generate? [closed]

Suppose I view a Wikipedia page that has math formulas on it. They use Latex, with the "math" tag in angle-brackets. The next step is to send it to my Kindle (Amazon provides users of Chrome with an ...
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### How to keep some equal signs aligned in flushed right equations

\begin{align*} 2\sin2\theta+1=0\\ \sin2\theta=-\dfrac{1}{2}\\ \alpha&=\sin^{-1}\left(\dfrac{1}{2}\right)\\ &=\dfrac{\pi}{6}\\ 2\theta=\pi+\alpha,2\pi-\alpha,3\pi+\alpha,4\...
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### Equations not working in beamer

I'm trying to include equations into my beamer presentation, however every time i do it says that it has exited with errors. I have tried using $$and$$$$and$$have also ...
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### How to redefine \eqref output, keeping numbering but changing text and brackets?

I am looking for a macro to redefine \eqref{} output. Resulting in: (equation: 1.1) Thank you.
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### Is there a more typographically-satisfying bigints package?

I found the bigints package but as its documentation shows, the symbol is simply scaled up in size which leads to a much thicker stroke: Is there a package that deals with this properly, or failing ...
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### Equation counter does not work

My references for equations do not work. The numbers on the right side to the equation are fine, but the references all show 3.1.2 (which does not exist...) I show you my complete header with a ...
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### space before \_ in Equation

\begin{aligned} CPU\_time=\sum\limits_{i}^{n_1}{T\_int_{i}}+ \sum\limits_{}^{n_2}{T\_exe_{i}}+\sum\limits_{}^{n_3}{T\_gc_{i}} \end{aligned} \label{eq:cputime} will ...