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More about Solving
D–7
File name 33s-English-Manual-040130-Publication(Edition 2).doc Page : 388
Printed Date : 2004/1/30 Size : 13.7 x 21.2 cm
Û
X
Finds a root with
g
uesses 0 and
5.
º
Î
Shows root, to 11 decimal
places.
<
º
Î
The previous estimate is slightly
bigger.
<
f(x) is relatively large.
Note the difference between the last two estimates, as well as the relatively large
value for
f(x). The problem is that there is no value of x for which f(x) equals zero.
However, at
x = 1.99999999999, there is a neighboring value of x that yields
ant opposite sign for
f(x).
Example:
Find the root of the equation
01
6
2
=−
−
x
x
As x approaches
6
, f(x) becomes a very large positive or negative number.
Enter the equation as an expression.
Keys: Display: Description:
º
d
Selects Equation mode.
h
X
¯
º
y
h
X
)
2
Ã
6
º
|
Ã
1
Ï
Enters the equation.
º
Î
Checksum and length.
Å
Cancels Equation mode.