Solver Functions - HP -18C Owner's Manual

SOLVER Functions
Table 9-3 lists the functions that can be included in formulas. Lower-
case characters in parentheses stand for numbers, variable names, or
numeric expressions.
Table 9-3. Functions That Can Be Used in Formulas.
Function Description
ABS(x) Absolute value of x.
ALOG(x) Common (base 10) antilogarithm; 10X
DATE(d1 :n) The date n days after (when n is positive) or before
(when n is negative) date d1. The format for d1 is set in
the TIME/SET menu .
DDAYS(d1:d2:c) The number of days between dates d1 and d2 . The for-
mats for d1 and d2 are set in the TIME menu; c
designates the calendar:
EXP(x)
EXPM1(x)
FACT(x)
FP(x)
IDIV(x:y)
INT(x)
IP(x)
LN(x)
LNP1(x)
LOG
• c
=
1 for the actual calendar, which recognizes leap
years.
• c
=
2 for the 365-day calendar, which ignores leap
years .
• c
=
3 for the 360-day calendar, which uses 12, 30-day
months.
Natural antilogarithm; eX
eX -1
x!; factorial of a positive integer
Fractional part of x.
Integer part of the quotient of x / y.
The greatest integer less than or equal to x.
Integer part of x.
Natural (base e) log of x.
In (1
+
x)
Common (base 10) log of x.
144 9: The Formula Solver