User Guide

350 Chapter 6: ActionScript Core Classes
Math.E
Availability
Flash Player 5. In Flash Player 4, the methods and properties of the Math class are emulated using
approximations and might not be as accurate as the non-emulated math functions that Flash
Player 5 supports.
Usage
Math.E:Number
Description
Constant; a mathematical constant for the base of natural logarithms, expressed as e. The
approximate value of e
is 2.71828182845905.
Example
This example shows how Math.E is used to compute continuously compounded interest for a
simple case of 100 percent interest over a one-year period.
var principal:Number = 100;
var simpleInterest:Number = 100;
var continuouslyCompoundedInterest:Number = (100 * Math.E) - principal;
trace ("Beginning principal: $" + principal);
trace ("Simple interest after one year: $" + simpleInterest);
trace ("Continuously compounded interest after one year: $" +
continuouslyCompoundedInterest);
/*
Output:
Beginning principal: $100
Simple interest after one year: $100
Continuously compounded interest after one year: $171.828182845905
*/
Math.exp()
Availability
Flash Player 5. In Flash Player 4, the methods and properties of the Math class are emulated using
approximations and might not be as accurate as the non-emulated math functions that Flash
Player 5 supports.
Usage
Math.exp(x:Number) : Number
Parameters
x
The exponent; a number or expression.
Returns
A number.