Re: How to use LaTeX

[sourav das]

I've a problem. I've written a lengthy equation but in my screen i couldn't see total equation.
Ex.
$\sum_{i=1}^{n-2}\sum_{j=i+1}^{n-1}\{2a_i a_j(ij(n-i)(n-j)-\frac{n^2-1}{3}i(n-j))\}\leq \sum_{i=1}^{n-1}a_i^2( \left ( \frac{n^2-1}{3} \right )i(n-i)-i^2(n-i)^2)$
what can i do?

[tanvirab]

Moved to site support.

You have to break the line.
One way to do it is use eqanarray as below. The & signs let you choose where to break the line.

\begin{eqnarray}
\sum_{i=1}^{n-2}\sum_{j=i+1}^{n-1}\{2a_i a_j(ij(n-i)(n-j) & & -\frac{n^2-1}{3}i(n-j))\} \\
& \leq & \sum_{i=1}^{n-1}a_i^2( \left ( \frac{n^2-1}{3} \right )i(n-i)-i^2(n-i)^2)
\end{eqnarray}

Another way is of course, just write two lines and control the space manually, like below,

\[ \sum_{i=1}^{n-2}\sum_{j=i+1}^{n-1}\{2a_i a_j(ij(n-i)(n-j) -\frac{n^2-1}{3}i(n-j))\} \]
\[ \hspace{2in} $ \leq \sum_{i=1}^{n-1}a_i^2( \left ( \frac{n^2-1}{3} \right )i(n-i)-i^2(n-i)^2) \]

But unfortunately hspace does not seems to be working in this forum.

[zadid xcalibured]

i'm too late.it's hard to do this camp when latex is must.i have n additional problem.i use net with a mobile.

[nafistiham]

ভাইয়া,লাইনগুলাকে মাঝখানে আনা যায় কীভাবে? যেমন নিচের লাইনটা ঃ
LaTeX
english ,বাংলা বা latex এ লেখা সমীকরণ গুলাকে space দিয়ে মাঝখানে আনতে পারিনা।

[tanvirab]

For one line you can use backslash[ backslash] instead of \$ \$ (backslash = \)
If you want multiple lines then you need to use eqnarray
See here : http://www.maths.tcd.ie/~dwilkins/LaTeX ... iline.html