[Tex/LaTex] Error when using align ”Missing } inserted. } l.47 \end{align}”

alignequationserrors

I get

"Missing } inserted. } l.47 \end{align}''

when I'm using the align function to align multiple equations. The code works if I remove \begin{align}...\end{align} and the & symbols before the equals.

This is the section of code with an error.

This is what I get when I remove the \begin{align}...\end{align} and the & before the equals.

$When i remove \begin{align} and \end{align}$

What I wanna do is aligning all the equals one over another?

Also, I'm new to LaTeX, if i'm doing some general errors or do something wrong I'm open to receiving comments on that.

Thanks for helping!

Best Answer

The $ are not needed here since the align environment is in math mode. Give this a shot.

\begin{align}
\int_{-1}^{1}\int_{0}^{2}\frac{1}{2^{3/4}}(1+y)dydx &= \int_{-1}^{1}\Big[\frac{y}{2^{3/4}}+\frac{y^{2}}{2^{7/4}}\Big]_{0}^{2}dx\\
&= \int_{-1}^{1}\frac{2}{2^{3/4}}+\frac{4}{2^{7/4}}dx\\
&= \Big[\frac{2x}{2^{3/4}}+\frac{4x}{2^{7/4}}\Big]_{-1}^{1}\\
&= \frac{2}{2^{3/4}}+\frac{4}{2^{7/4}}-\Big(\frac{-2}{2^{3/4}}-\frac{4}{2^{7/4}}\Big)\\
&= 4\sqrt[4]{2}
\end{align}

If you do not want each line to be numbered, simply use align* instead of align.

Hope this helps!

Related Solutions

[Tex/LaTex] Missing delimiter (. inserted). error

Pretty annoying indeed. But I'd use the slashed form for 1/2 and \tfrac for the fractions in the exponents. However, this needs some corrections, because the exponent would hide the base, without them. So I propose to raise the exponents by some amount. In order to fix also the alignment of the fraction numerators, a \mathstrut is used for n+1 to compensate for the parentheses in (-1) in the other exponent. Finally, \bigl and \bigr are used for the floor parentheses because \left and \right would produce too big fences.

The auxiliary macro \makehigher pretends that the base is higher than its natural height by adding an invisible rule.

\documentclass{article}
\usepackage{amsmath}

\newcommand{\makehigher}[2][3]{%
  {\rule{0pt}{#1ex}#2}%
}


\begin{document}
\[
P_{n}=4\cdot
\makehigher{(1/2)}^{\bigl\lfloor\tfrac{\mathstrut n+1}{2}\bigr\rfloor-1}\cdot
\makehigher{2}^{\tfrac{3-(-1)^{n}}{4}}
\]
\end{document}

Adjust the amount of raising (default 3ex) by using the optional argument; you could try \makehigher[2.5]{...}).

Here's a picture where I added also a rule to show that the fraction lines in the exponents are level with each other.

enter image description here

Overleaf error messages when compiling with \begin{align} and \end{align} and using \bm{\varphi}

Having gotten access to the project in Overleaf, here are my observations.

The project cannot compile and the first error is

<inserted text> 
                }
l.439     \bm{\varphi}
                      _t (\bm{p}_0, \bm{q}_0) = (\bm{p}(t, \bm{p}_0, \bm{q}_...
I've inserted something that you may have forgotten.
(See the <inserted text> above.)
With luck, this will get me unwedged. But if you
really didn't forget anything, try typing `2' now; then
my insertion and my current dilemma will both disappear.

! Missing } inserted.
<inserted text> 
                }
l.439     \bm{\varphi}
                      _t (\bm{p}_0, \bm{q}_0) = (\bm{p}(t, \bm{p}_0, \bm{q}_..

That can be boiled down to

\documentclass[a4paper]{article}
\usepackage{bm,mathtools}
\usepackage{chemist}
\begin{document}
\begin{equation*}
    \bm{\varphi}
\end{equation*}
\end{document}

I don't think that chemist package is recommendable, one should probably use mhchem or chemmacros (I haven't looked into what chemist does other than it redefines \varphi and friends).

The next error was two labels in an equation. Lastly a missing comma in a .bib file. So in the end not too hard once I had access to the files.

The main take down here is: When Overleaf reports an error. Look at the first one. The rest can be accumulations that goes away once the first error is fixed.

Where the OP got the

Missing } inserted."...

error from I do not know, but it was not the first error listed when Overleaf compiled the project copy I had access to.

Best Answer

Related Solutions

[Tex/LaTex] Missing delimiter (. inserted). error

Overleaf error messages when compiling with \begin{align*} and \end{align*} and using \bm{\varphi}

Related Question

Overleaf error messages when compiling with \begin{align} and \end{align} and using \bm{\varphi}