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\-,
\-,
\-,
rit
.5
Figure
B-ll.
tlxl
:
lSGlllrll
v
Round-Ofl Error
v
The
limited (l2-digit)
precision
of the
calculator can
cause
"round-off"
v
errors
that
adversely affect
iterative solutions. For
example:
\.
[(rl
+
1)
+
tOtslz
-
1030
:
0
v
has
no roots
because
the
left
side
of the
equation
is always positive.
v
Howwer, the
Solver
finds an
answer.
When the equation is edited to
the
form y
:
f(x)
and
solved
for y, the
Solver
calculates
y
:
0 due to
v
round-off
error.
By recognizing situations where round-off error
v
might
occur,
you
can
better
waluate the
results,
and
perhaps
rewrite
the function to reduce the effects
of
round-off.
\-,
\-,
\,,
\-,
\-,
B:
llore
About the
Solver
225
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