HP -32S Owner's Manual page 118

Keys:
ill SOLVE// I {FN} M
Hi SOLVE// |
{S0LVE}D
0 iR/sl
5[R7S]
9.8 [r/s]
Display:
FN= M (briefly)
V?3,000.0000
T? value
G? value
D=122.5000
Description:
Specifies LBL M for the
function.
Specifies D as the un
known. Prompts for V
as it shows the current
value of V (used in the
last example).
Resulting distance in
meters.
Try another calculation using the same equation: how long does it
take an object to fall 500 meters? Since v0 and g are already stored,
there is no need to reenter them.
MSOLVE//1
{S0LVE}T
R/Sl
•rTsI
500 [rTs]
V?0.0000
G?9.8000
D? 122.5000
T=10.1015
Specifies a different
unknown; prompts for
V.
Result in seconds.
Example: Finding the Roots of an Equation. Consider the single-
variable equation
x3 - 5x2 - lOx = -20.
Rearranging the equation so one side is zero yields
x3 - 5x2 - 10* + 20 = 0.
Horner's method (see chapter 5) simplifies this equation to use less
memory:
x(x(x - 5) - 10) + 20 = 0.
116 7: Solving ffor an Unknown Variable in an Equation