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C–4 More about Solving
File name 32sii-Manual-E-0424
Printed Date : 2003/4/24 Size : 17.7 x 25.2 cm
Keys: Display: Description:
{
G
Select Equation mode.
2
_y
K
X
0
3
4
y
K
X
0
2
6
yK
X
8
.º%:-%:.
Enters the equation.
{
/
)
Clecksum and length.
Cancels Equation mode.
Now, salve the equation to find the root:
Keys: Display: Description:
0
H
X 10
_
Initial guesses for the root.
{
G
.º%:-º%:.
Selects Equation mode;
displays the left end of the
equation.
{
X
#
%/)
Solves for X; displays the
result.
9
)
Final two estimates are the
same to four decimal places.
9
.).
f(x) is very small, so the
approximation is a good
root.
Example:
An Equation with Two Roots.
Find the two roots of the parabolic equation:
x
2
+ x – 6 = 0.
Enter the equation as an expression: