HP HP-18C - The MATH Menu Functions

The MATH Menu Functions
Six math operations are available using the MATH menu. To display
the MATH menu, press .. in the MAIN menu. Except for " ,
these keys use the number furthest to the right in the calculator line.
Table 2-2. The MATH Menu Keys
Menu Key Description
...
Common (base 10) logarithm of a positive number.
..
Common (base 10) antilogarithm; calculates 1O
x
.
...
Natural (base e) logarithm of a positive number.
IDiII
Natural antilogarithm; calculates eX .
IIDI
Factorial.
..
Displays 7r (3.14159265359) in the current display format.
Starting from the MAIN menu:
Keys:
2.5 "
..
790 [B 4
IIDI
o
Display:
316.23
7913 . 1313 +24.1313
814.1313
42 2: Arithmetic
Description:
Calculates 10
2
.
5
.
Calculates the factorial of
4.
Completes the
calcula tion.