EXP Function
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 Action

 Calculates the exponential function.


 Syntax

  EXP( x)


 Remarks

 The  EXP function returns  e (the base of natural logarithms) to the power
 of  x.

 The exponent  x must be less than or equal to 88.02969 when you are using
 single-precision values and less than or equal to 709.782712893 when you are
 using double-precision values. If you use a value of  x that isn't within
 those limits, BASIC generates the error message Overflow.

  EXP is calculated in single precision if  x is an integer or
 single-precision value. If you use any other numeric data type,  EXP is
 calculated in double precision.


 See Also

  LOG


 Example

 The following example uses the  EXP function to calculate the growth of a
 bacterial colony over a 15-day period. The program prompts you for an
 initial population and the rate of growth.

 CLS    ' Clear screen.
 INPUT "Initial bacterial population"; Colony0
 INPUT "Growth rate per day as a percentage of population"; Rate
 R = Rate - 100 . Form$ = "##  ###,###,###,###"
 PRINT . PRINT "Day        Population"
 FOR T = 0 TO 15 STEP 5
     PRINT USING Form$; T, Colony0 * EXP(R * T)
 NEXT


 Output

 Initial bacterial population? 10000
 Growth rate per day as a percentage of population? 10

 Day        Population
  0           10,000
  5           16,487
 10           27,183
 15           44,817