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HP -22S Owner's Manual Page 79

Scientific calculator.
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For example:
AxB ..... 3=C
is interpreted as A x B3
=
C.
To raise A x B to the 3rd
power, enter
(AxB) ..... 3=C.
A +B+C= 12
is interpreted as A
+
(B
-+-
q
=
12. To divide the sum
of A
+
B by C, enter
(A+B)+C=12.
In interpreting
CHG <T +12: A-6 )-,'2,
the Solver evaluates the argu-
ments
T
+
12 and
A -
6, computes the value of the function, and
then squares the function value .
• You cannot use parentheses for implied multiplication. For exam-
ple, the expression
P(1 - F)
must be entered as P x ( 1 - F ), with the
x operator inserted between P and the parenthesis.
Example: Using the Syntax Rules To Write an Equation.
The fol-
lowing equation calculates the perimeter of a trapezoid. The equation
is written as it might appear in a book:
Perimeter
=
a
+
b
+
h
(_1_
+
_1_)
sin 8
sin
I/>
a
h
b
The following equation obeys the syntax rules for HP-22S equations:
Parentheses used to group terms
;irB
7
,?s,
";tJ"S I
"~)
Single
No implied
DiviSion is done
letter
multiplication
before addition
name
5:
Evaluating and Solving Equations
79

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