Special Variables and Characters Because html does not allow special characters such as the integral, sibma, delta, square root, and pi signs, the review section uses other signs that are accepted in html. Unlike most pages that uses images for these special signs, this Calc page is aware of those who do not have a ppp or slip connection, an image browser, a fast modem, or those that choose to only view text. As a result , the Calc AP AB Test Review section and Review Test do not penalize the users for their situation in regard to internet access.

The Sigma notation sign usually denoted as an E will be replaced with £.

The Delta sign usually denoted as a triangle will be symbolized by ¤

The Integral sign usually denoted by some strange squiggle with dots at the end will be represented by §

The square root sign which you should be familiar with is transmogrified into SQRT. Note that what is in the ( ) will be what is normally under the square root sign.