# How to use LATEX

#### zylo

How do you use latex to enter an equation? I can't even do $$\displaystyle x^2$$.

Latex Help discusses all kinds of equations without ever indicating how they were entered. Is this some kind of "in" thing?

Online tutorials don't help at all.

#### zylo

How do you use latex to enter an equation? I can't even do $$\displaystyle x^2$$.

Latex Help discusses all kinds of equations without ever indicating how they were entered. Is this some kind of "in" thing?

Online tutorials don't help at all.
When I first posted this it wouldn't do x^2. Now it does. Is there a time schedule when LATEX works?

#### Hoempa

Math Team
Rarely, I must refresh the page to have the LaTeX render, but I see why this would be on a time schedule.

#### zylo

Ahhhhhh!

$$\displaystyle \begin{matrix} a & b & c \\ d & e & f \\ g & h & i \end{matrix}$$

The secret is:
Right click on matrix to see Tex code. To complete it, you have to "wrap" tags around selected code. see $$\displaystyle \Sigma$$ icon above message box.

I copied/pasted this particular code from wicki LaTex.

#### zylo

Ahhhhhh!

$$\displaystyle \begin{matrix} a & b & c \\ d & e & f \\ g & h & i \end{matrix}$$

The secret is:
Right click on matrix to see Tex code. To complete it, you have to "wrap" tags around selected code. see $$\displaystyle \Sigma$$ icon above message box.

I copied/pasted this particular code from wicki LaTex.
When I right-clicked on above matrix I found "\displaystyle" added. Added it to my original code and got:

$$\displaystyle \displaystyle \begin{matrix} a & b & c \\ d & e & f \\ g & h & i \end{matrix}$$

Interesting. Saw it somewhere but don't remember what it does. Will look it up.

#### zylo

$$\displaystyle hello world$$

Oh well. Rome wasn't built in a day.

$$\displaystyle \text{hello world}$$

sic transit gloria

When I first previewed code nothing happened- hence above comments. Just before posting I previewed again, and wala. Wish I could remember the quote that goes something like "stranger things than are dreamt of in your philosophy"

EDIT: \displaystyle did it. Which raises the question, should I add it or let MMF do it?

EDIT: Good Grief! Now what happened. All I did was add edit to original post without changing anything and I get dollar signs added to my code. Is this telling me I have to pay? Can't wait to see what happens when I submit this edit.

EDIT: Posted last edit and worked again.

EDIT: Refresh!!! Refresh!!! Just as Hoempa said above. It's not the time after all.

To quote from a movie:

Pain make man think
Thought make man wise
Wisdom make life endurable,

which is wrong on every count, but cute. Take-off from Ecclesiastes.

EDIT: But that means you can't rely on "preview."
"In much wisdom is much grief, And he who increases knowledge increases sorrow." Ecclesiastes

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#### zylo

$$\displaystyle y=x^2$$
$y=x^2$

Neither of the above in LaTex showed up as rendered equations no matter how often I previewed or refreshed in reply mode
Oh, it's lunchtime.

Exercise in futility,

EDIT: Of course, they work once submitted. So you really don't know till you submit. Didn't work in the edit preview.

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#### Hoempa

Math Team
When I preview, LaTeX renders. It just takes a few steps.