Lesson 11: arithmetic including units, Kiiiiabwaa, Time – HP 48G User Manual
Page 41: 3 z . k s
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Lesson 11: Arithmetic including Units
You needn’t calculate with numbers separated from their natural
measurement units if
you
use the
HP 48. A
u n i t o b j e c t
is
a
real
number connected to a measurement unit with an underscore
character (......). The built-in unit management feature of the HP 48
allows you to attach units to numbers arid then do arithmetic with the
resulting
unit objects.
As
long as
you attach
the
correct
units,
it
will
keep track of the units as you calculate and report, the answer in any
appropriate measurement you want.
Exmii|)le:
Cheate the unit object 32_k9*r'V''''2.cs''’''2.
S t e p 1 :
Enter tire Ihiits C'at.alog, key in the value and append the
first unit.
(r»l
32 f'i H i
K i j
1-
3 Z . k s
KiiiiaBwaa
S t e p 2 :
Append the second unit. This reciiiires that you return to
the main Units Catalog screen and select a clifferent category.
Note that appending a unit to an object with a unit already
attached implies a multiplication of the units.
GS
1
:
32
_k
9
*m"£
iHREF;M'-'E
S t e p S :
Append
the
remaining
units in
the denominator.
Note
that
pressing the
right-shift (fr»1)
before
the desired unit
implies a
d i i n s i o n
—that, you want to append the unit in the
denominator instead of the numerator of the compound unit.
TIME
m i
1:
BSIOBBE
m
Arithmetic 3-13