**Here is how I used to show the quadratic formula:**

x = -b +- (b^2-4ac)^(1/2)

2a

Not very readable or recognizable

Looks better from here

Write it in Prezi

It may also be

inserted as a picture

Starts getting really ugly, really fast

The best way...

Looks good here...

... and here...

...and even here...

The key is this website:

http://www.codecogs.com/latex/eqneditor.php

Here is where your LaTeX Code goes, more on that later

Here is the file output: Set yours to swf. Its the one vector format Prezi allows.

Here is how we're going to insert our equation into Prezi. Set this to say URL.

LaTeX code for the quadratic formula looks like this:

x =

\frac{

-b

\pm

\sqrt{

b

^2

-4ac

}

}{

2a

}

\frac{numerator}{denominator}

gives us the fraction

\pm

is the +- sign

\sqrt{}

gives us the radical

^2

squares b

LaTeX does take some time to learn, but it isn't too bad if you've ever used an equation editor. There are all sorts of guides on the web if you need them.

Once you have your latex written, here's what you do:

Write your code

Make sure it matches what you want

swf

url

Copy this text

In Prezi, use Insert>Image

Paste that text from the last page in here and press search:

Voila!

Like I said, the LaTeX code can be difficult at first, but once you learn it..

...it's easy to write almost anything

(Pronounced "Lay Teck")

**Note: Two changes: first it doesn't seem that you can insert a picture from a search any more. Perhaps they just moved it by I can't find it. You should be able to download the swf file instead and upload it.**

Except, of course, that the swf part of code cogs doesn't seem to be working at the moment. Let me know if you find a work around. Thanks!

Except, of course, that the swf part of code cogs doesn't seem to be working at the moment. Let me know if you find a work around. Thanks!