13-8 Using mathematical functions
Constants
The constants available from the MATH FUNCTIONS 
menu are mathematical constants. These are described in 
this section. The hp 39gs has two other menus of 
constants: program constants and physical constants. 
These are described in “Program constants and physical 
constants” on page 13-24.
e Natural logarithm base. Internally represented as 
2.71828182846.
e
i Imaginary value for  , the complex number (0,1).
i
MAXREAL Maximum real number. Internally represented as 
9.99999999999 x 10
499
.
MAXREAL
MINREAL Minimum real number. Internally represented as
1x10
-499
.
MINREAL
π Internally represented as 3.14159265359.
π
Conversions
The conversion functions are found on the Convert 
menu. They enable you to make the following 
conversions.
→C Convert from Fahrenheit to Celcius.
Example
→C(212) returns 100
→F Convert from Celcius to Fahrenheit.
Example
→F(0) returns 32
→CM Convert from inches to centimeters.
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HP 39gs English.book  Page 8  Wednesday, December 7, 2005  11:24 PM