```
\begin{equation}
\begin{split}
${\delta _{k + 1}} = {\theta _{k + 1}} - {\theta _k}$ \\
\end{split}
\end{equation}
```

I am using TeXstudio to write the equation. I am getting the following error. I am a beginner in latex

```
Missing } inserted. \end{split}
```

Where do I have to insert the `}`

?

## Best Answer

You have spurious

`$`

's inside`split`

:BTW: If it is only line inside equation,

`split`

is completely unneeded.