HOME  |  WHAT'S NEW  |  CART  |  FIND:   |  HELP

# Quick Tour

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

## Things to Try as a User

### Click Around The Page

• 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.

### Do a Search

• 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”.

### Save Items in Cart

• 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.

## Things to Try as an Editor

• 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.
• 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!)

Practice editing in The Sandbox.

## A Problem!

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