I have a problem with multline command when I would like to handle long equation here is the code:
\begin{multline}
\gamma(w_{i-1}, ..., w_{i-n+1}) = \frac{D_{1} N_{1}(w_{i-1}^{w_{i-n+1}} w') + D_{2} N_{2}(w_{i-1}, ..., w_{i-n+1} w')
\\ + D_{3_{+}} N_{3_{+}}(w_{i-1}, ..., w_{i-n+1} w') }{\sum_{w_{i}}N(w_{i} ...w_{i-n+1}^{i})}
\end{multline}
the error is: extra "}"
But I dont find the mistake
Can you help me please?
Thank you
\documentclass{...}
and end with\end{document}
. With this you will help to people who like to help you ...