HP 32SII User Manual
Page 321
More
about
Solving
C–7
File name 32sii-Manual-E-0424
Printed Date : 2003/4/24 Size : 17.7 x 25.2 cm
Cancels Equation mode.
Now, solve to find the root:
Keys: Display: Description:
0
H
X 5
_
Your initial guesses for the
root.
{
G
1%2/)
Selects Equation mode;
displays the equation.
{
X
#
%/)
Finds a root with guesses 0
and 5.
{
)
Shows root, to 11 decimal
places.
9
{
)
The previous estimate is
slightly bigger.
9
.)
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:
A Pole.
Find the root of the equation
0
1
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:
{
G
Selects Equation mode.