Hi
This is only for my own use to make sure my LaTeX comes out right.
I don't want to make a mess of any maths layout I submit in my posts.
$\displaystyle \frac{dy}{dx}(2x^2+6) = 4x$
Regards
Test Post :
$\displaystyle \frac{dy}{dx}(2x^2+6) = 4x \\ \log_{5} 25=2$
$\displaystyle \sqrt[3]{2}$
$\displaystyle \arctan 45$
$\displaystyle \sum x_i$
$\displaystyle 178 \pm 5$
$\displaystyle this \Leftrightarrow \\ this$
$\displaystyle \begin{array}{l|cr|}4&1&2\\-4&-1&-2\\\hline\end{array} $
$\displaystyle f(x)=\left\{\begin{array}{cc}0,&\mbox{ if }x\leq 0\\1, & \mbox{ if } x>0\end{array}\right.$
$\displaystyle \left(\begin{array}{cc}1&9\\7&1\end{array}\right) $
$\displaystyle \begin{array}{cc}1&0\\0&1\end{array} $
$\displaystyle \begin{array}{lcr}4&1&2\\-4&-1&-2 \\-4&-1&-2 \end{array} $
Hello, guinster!
You're doing great!
Personally I dislike those long minus-signs.
To me, $\displaystyle \begin{pmatrix} 3 & -1 \\ -2 & 0 \end{pmatrix}$ looks awkward.
I prefer: .$\displaystyle \begin{pmatrix}3 & \text{-}1 \\ \text{-}2 & 0 \end{pmatrix}$
where I replace - with \text{-}.
Also it's common practice to write the d's in a different font when they're used for differentials.
\frac{\mathrm{d}y}{\mathrm{d}x} gives $\displaystyle \begin{align*} \frac{\mathrm{d}y}{\mathrm{d}x} \end{align*}$
In fact, the mathrm font is used when your letter is used for something other than a variable, such as a predefined constant like $\displaystyle \begin{align*} \mathrm{e} \end{align*}$ or $\displaystyle \begin{align*} \mathrm{i} \end{align*}$ as well