HP 33s - Manual (Page 113)

Solving Equations 7–3
‘
/#º!-
)ºº!: Terminates the equation
and displays the left end.
| 
/
/ Checksum and length.
g (acceleration due to gravity) is included as a variable so you can change it for
different units (9.8 m/s
2
or 32.2 ft/s
2
).
Calculate how many meters an object falls in 5 seconds, starting from rest. Since
Equation mode is turned on and the desired equation is already in the display, you
can start solving for D:
Keys: Display: Description:

#_ Prompts for unknown
variable.
D #@
value Selects D; prompts for V.
0 g
!@
value Stores 0 in V; prompts for
T.
5 g
@
value Stores 5 in T; prompts for
G
.
9.8 g
#
/
)
 Stores 9.8 in G; solves
for D.
Try another calculation using the same equation: how long does it take an object
to fall 500 meters from rest?
Keys: Display: Description:
| H
/#º!-
)ºº!: Displays the equation.
 T @
)
 Solves for T; prompts for
D
.
500 g
#@
)
 Stores 500 in D; prompts
for V.
g
@
)
 Retains 0 in V; prompts
for G.
g
#
!/

)
 Retains 9.8 in G; solves
for T.