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750
ActionScript classes
See also
acos (Math.acos method)
,
asin (Math.asin method)
,
atan (Math.atan method)
,
atan2 (Math.atan2 method)
,
sin (Math.sin method)
,
tan (Math.tan method)
E (Math.E property)
public static E : Number
A mathematical constant for the base of natural logarithms, expressed as
e
. The approximate
value of
e
is 2.71828182845905.
Availability:
ActionScript 1.0; 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.
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
exp (Math.exp method)
public static exp(x:Number) : Number
Returns the value of the base of the natural logarithm (
e
), to the power of the exponent
specified in the parameter
x
. The constant
Math.E
can provide the value of
e
.
Availability:
ActionScript 1.0; 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.
Содержание FLASH 8-ACTIONSCRIPT 2.0 LANGUAGE
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