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

• 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!)

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*}