HP 33s Owner's Manual page 108

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Eleven of the equation functions have names that differ from their equivalent
operations:
Operation
Example: Perimeter of a Trapezoid.
The following equation calculates the perimeter of a trapezoid. This is how the
equation might appear in a book:
The following equation obeys the syntax rules for HP 33s equations:
6–16
Entering and Evaluating Equations
File name 33s-E-Manual-1008-Publication(1st).doc
Printed Date : 2003/10/8
2
x
x
x
e
x
10
1/x
y
X
x
y
INT÷
Rmdr
3
x
3 x
Perimeter = a + b + h (
a
h
θ
b
Size : 13.7 x 21.2 cm
Equation function
SQ
SQRT
EXP
ALOG
INV
X ROOT
^
IDIV
RMDR
CB
CBRT
1 1
+
)
θ φ
sin sin
φ
Page : 386