This is a quick tour of the site so you can get a feel for some of the features. -- Eric Hsu

- Try clicking on the table of contents and see how it moves you around the page.
- Look at the alternate format links available for Sample Entry. (The links are to the right of the entry.)
**NEW. Look at the special link menu at the top right. It contains:**- HOME which brings you back to the starting page.
- WHAT'S NEW which lists all pages created or changed in the last week.
- CART which lets you view your "shopping cart" (details below).
- FIND which lets you search the site (details below)
- HELP which takes you to this Quick Tour.

- If you want to use the old clunky search form, go straight to Classic Search Form.
- To explore the new search possibilities, try these examples in the Search box at the bottom.
**Find a Word**.`ladder`

will produce a few classic ladder problems**AND Search**.`squeeze theorem limit`

will produce problem pages which mention “squeeze” AND “theorem” AND “limit”.**Find a Phrase**.`"squeeze theorem"`

will produce pages with that literal phrase (and thus miss the problems tagged`squeeze-theorem`

)**Find LaTeX**.`\\sec \\int rote`

will find problem pages with the latex for secant, integral and the word`rote`

. Notice the double`\\`

is necessary to find a single backslash.**OR Search**.`(rocket|ladder|plane)`

will find pages with “rocket” OR “ladder” OR “plane”.**Tag Search**.`Tags:.*c2`

finds pages with a line with “Tags” followed by anything followed by “c2”, i.e. a problem tagged c2.- c2 means, by the way, that the tagger thought the problem was conceptually harder than c1 (normal) but conceptually easier than c3 (really challenging). t1, t2 and t3 refer to technical difficulty.

**Complex ANDs**.`(rocket|ladder|plane) Tags:.*c2`

This will find pages that match the first OR search AND the second Tag search.- You can have as many pieces ANDed together. We don’t have a way to do ORs of pieces, so this isn’t a full boolean search.

**Regular Expressions**. Actually, any Perl regular expression is allowed in the Search. One tasteful use is if you want problems about a “fly” but don’t want to match problems about “flying”, you can search for`fly\b`

, and that will require a word stop at the end of “fly”.

- There is a simple “shopping cart” feature.
- Next to every element in a search listing is a checkbox. Selecting a checkbox will put the item in your cart.
- You can use the
`View Cart`

link on the bottom menu to look at your saved items. - In the title bar of every item on the right is a checkbox which you can use to put it in or out of your cart.
- This requires Javascript and cookies turned on.
- Your cart can hold up to 4K of page titles, which is about 300 problems or 40 papers with really long titles.

**NEW. The contents of your cart can be exported in a few ways**. You can download:all pieces as one HTML page

all the BibTeX pieces as a single BibTeX file.

all the LaTeX pieces as a single LaTeX file, either as separate pages or a single enumerated list.

Log in. (Login link is at the bottom right.) Be sure you put your Username in. Now you have access to more commands at the bottom of each page.

- Edit the entry on this page. (Look for the Edit This Page link.) Save it and (if you wrote valid text) admire how everything is updated.
- Try pasting in HTML from other web pages. We try to keep much of the formatting.
- Notice how real LaTeX is displayed in a civilized way.
- If you truly mess up the page, you can go to “See Past Edits” and rollback to a previous version (perhaps the one before you started editing!).
**NEW. "Manage Site Changes" is an advanced version of the "What's New" page.**- Notice how the Table of Contents is automatically built.
- You can create a new page by using the "Add New Page" form at the bottom.
- You can also create a new page by making a link on an existing page.
- Enter the text
`[[Name_Of_Your_Page?]].`

When you save the page, that text will look like [[Name_Of_Your_Page?]]. Notice the question-mark. You can then click on the question-mark to go to an editing page. (Please don’t make a new page there with that name so we can preserve the nice little question mark!)

- Enter the text

Practice editing in The Sandbox.

Find the following limits. Be sure to explain your reasoning at every step.

\begin{alignat*}{3}

&a) \lim_{x \to \infty}\frac{x+\sin x }{ 5x+6} & &b) \lim_

{x \to \infty}\frac{\sin x }{ x} & &c) \lim_{x \to \infty}x \sin \frac{

1 }{ x} \\

&d) \lim_{x \to \infty}\frac{x \sin x }{ x^2+5} &

&e) \lim_{x \to \infty}{\sqrt {x^2+x} - x} &

&f) \lim_{x \to \infty}\frac{x^2( 1+ \sin^2x) }{ (x+\sin x

)^2}

\end{alignat*}

Tags: practice, editors