HP 49g Graphing Calculator - Manual (Page 68)

The
CONVERT
command discussed in the previous section can be used to
convert to any specified units, SI units or otheiTvise. If you want to
convert a rmit object to its equivalent SI base imits, the
UBASE
command is
quicker, as it requires just one argument.
1. Press © @1)
TOOLS UBASE.
2. Enter the unit object with the units that you want to convert.
See “To create a miit object” on page 6-2 for instmctlons on creating
unit objects.
Example: 365_ft
3. Press (1.
Example result: 111.252jn
In RPN mode: follow steps 2 and 1.
To convert units to SI base units
You can also use the
UBASE coimnand
to convert an angle
measurement
unit
to radians.
Calculating with units
The HP 49G lets you execute many arithmetic operations with unit
objects, just as you would with real numbers:
• addition and subtraction (dimensionally consistent units only)
• multiplication and division
• inversion
• raising to a power
• percentage calculations (dimensionally consistent vmits only)
• comparisons of values (dimensionally consistent imits only)
• trigonometric operations (planar angular imits only)
Where possible, units are automatically converted during the calculation.
In such cases, the result is expressed in the units of the last imit object
entered.
Note that some operations require certain imit objects to be enclosed in
parentheses if you are working in algebraic mode. This is illustrated in the
examples given in the next section.
Unit objects Page 6-5