Accessibility options


exponential

Exponential

In mathematics, descriptive of a function in which the variable quantity is an exponent (a number indicating the power to which another number or expression is raised).

Exponential functions and series involve the constant e = 2.71828.... . Scottish mathematician John Napier devised natural logarithms in 1614 with e as the base.

Exponential functions are basic mathematical functions, written as ex or exp x. The expression ex has five definitions, two of which are: (i) ex is the solution of the differential equation dx/dt = x (x = 1 if t = 0); (ii) ex is the limiting sum of the infinite series 1 + x + (x2/2!) + (x3/3!) + ... + (xn/n!).

© RM 2009. Helicon Publishing is division of RM.


 
 

Encyclopaedia Search

Click a letter for the index
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Or search the encyclopaedia:
 
 
All results tagged with the symbol denotes content that is relevant to the national curriculum

Advertisement starts



Advertisement ends


Advertisement starts



Advertisement ends

Country Search

 
 

Dictionary search

 
 

South Africa Flag

South Africa Flag
Black, green, and yellow are the African National Congress (ANC) colours. Red, white, and blue are the colours of the former Dutch republics. Effective date: 27 April 1994.

Health Search

 
 
Search all Diseases Medicines

Advertisement starts



Advertisement ends

Skip to page content | Text onlyGraphical version of this page

Tiscali Quicklinks. Please visit our Accessibility Page for a list of the Access Keys you can use to find your way around the site, skip directly to the main navigation, to the page content, or to more links within reference.

web |  shopping |  this site |  video |  local services

Page Footer


Access keys


You will need to use different key combinations in order to use access keys depending on your internet browser, find out which on our accessibility page.
  • (0) Navigate to Accessibility page.
  • (1) Navigate to Home page.
  • (2) Navigate to My email.
  • (3) Navigate to My Account.
  • (4) Navigate to Site Map page.
  • (5) Navigate to Contact us page.
  • (6) Navigate to Members channel.
  • (7) Navigate to Services channel.
  • (8) Navigate to News & Info channel.
  • (9) Navigate to Entertainment channel.
  • ([) Skip down to the Primary navigation block.
  • (]) Skip down to the more links within this section block.
  • (=) Bypass all navigation and jump to the content.
  • (x) Text only version of this page.
Background images used:
furniture images used in the site icons used in the site images used in the header