Error when using align ''Missing } inserted. <inserted text> } l.47 \end{align}''

Question

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.

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!

Answer 1

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!