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v
Erample: Entering Guesses.
Use the equation
of
motion
for
free
\v.
fall from
the
o<ample
on page 89
to
calculate
how long
it
takes an
obiect
to
fall
1,000 meters.
Use 10 and
1.5
as
guesses.
\J
\-.
If
you have
not already entered the equation,
follow
steps
1
through
3
on page 89, and store 9.8067
in
G and 0
in
V0. Then:
v
Keys:
Ditplayt
DercriPtion:
\,
1000
EJ
Stores
the
DIS?hNCE.
t
IIISTfiNCE=
\-'
-l,
006. gggo
v
10
ru
Enters
the
guesses.
\/
15
:
TIHE=ls
' oEOS
v
t
TIHE=l4.zsBg
lterative solution for
.
TIME.
\/
Outcomes
of
an
lterative
Solution
\/
Cases
1, 2,
3,
and.4
describe
the
possible outcomes
of
an iterative
v
solution.
See
appendix B
for
o<amples
of
the four
cases.
v
Gase
l:
The HP-27S displays an answer on the calculator line.
It
is
v
aery
l*ely
that the
solver has
found a
solution.
v
There are
two sifuations
in
which the
Solver
returns a
case
1 answer
v
(see
figure
5-1).
v
r
Gase
la:
LEFT-RIGHT is
exactly
0.
r
Gase
lb:
LEFT-RIGHT is not zero
for
either estimate.
However,
v
the two
final
estimates
are neighbors-they
are
as close
together
as
\-'
possible,
given the calculator's
l2-digit
precision.
IEFT-RIGHT
is
v
positive
for
one estimate, arrd negative
for
the other
estimate.
:
\-/
5: The Equation
Solver ll3
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