Math & Science ⇒ amsmath | Aligned Equations causing Error

[thaelorin]

Hey, was trying to put fractions into fractions, and was running it through the compiler, but every time it tells me that the paragraph ended before align was complete.

Code: Select all

\item 
Determine whether the series is absolutely convergent.
\[\sum_{n=1}^\infty\frac{(-3)^n}{n^3}\]
\begin{align}
\lim_{n\rightarrow\infty} \left|\frac{a_{(n+1)}}{a_n}\right|		&=\left| \frac{\frac{(-3)^{n+1}}{(n+1)^3}}{\frac{(-3)^n}{n^3} } \right| 

\end{align}

Any advice on how I'm screwing this up? Cannot seem to figure out my mistake.

[nlct]

The blank line before \end{align} indicates a paragraph break which isn't permitted in that environment. Remove or comment out the blank line:

Code: Select all

\begin{align}
\lim_{n\rightarrow\infty} \left|\frac{a_{(n+1)}}{a_n}\right|            &=\left| \frac{\frac{(-3)^{n+1}}{(n+1)^3}}{\frac{(-3)^n}{n^3} } \right|
%
\end{align}

Regards
Nicola Talbot

[thaelorin]

Thanks. I kinda knew that. It was a silly mistake that I couldn't see. I guess thats just what comes from working with a new language.