Equation Functions - HP -22S Owner's Manual

The next equation also obeys the syntax rules. This equation uses the
inverse
function, I NV (typed by
lux
I)
instead of 1
+.
Notice that the
sine
(8 I N)
function is "nested" (located inside) the
I NV
function:
P=A+B+Hx(INV(8IN(T»+INV(8IN(F»)
Equation Functions
You can use most of the HP-22S numeric functions in equations. If
the function has arguments, they are enclosed in parentheses; func-
tions requiring two arguments use a colon (:) to separate the two
arguments. (Arguments are the numbers acted upon by functions. For
example, X is the argument in 8 I
N (
X ), which calculates the sine of
X.)
The arguments of functions can be constants, variables, algebraic
expressions, and other functions.
The functions are grouped into three categories:
• General math functions.
• Statistics functions.
• Unit conversion functions.
General Math Functions
Function Description
Typing Aid
ABS(x) Absolute value.
.1
PARTS I
{ABS}
ACOS(x) Arc cosine.
*
.1
ACOSI
ACOSH(x) Hyperbolic arc cosine.
.1
HYP
1.1
ACOS I
ALOG(x) Common (base 10) antilogarithm; 1 OX.
.110"
I
ASIN(x) Arc sine:
.IASINI
ASINH(x) Hyperbolic arc sine.
.1
HYP
1.1
ASIN I
ATAN(x) Arc tangent:
.IATANI
ATANH(x) Hyperbolic arc tangent.
.1
HYP
1.1
ATAN I
• Uses the current angular mode-Degrees or Radians.
80 6: Evaluating and Solving Equations