Example: A Relative Minimum.

Calculate the root of this parabolic equation:

x2 – 6x + 13 = 0.

It has a minimum at x = 3.

 

Enter the equation as an expression:

 

Keys:

Display:

Description:

{G



Selects Equation mode.

KX 02



Enters the equation.

„6 yKX ™

13 š

{

†

%:. º%-



Checksum and length.

/

)Cancels Equation mode.

Now, solve to find the root:

Keys:

0 HX 10

{G

{œX

@{

9{

9

Display:

Description:

 

Your initial guesses for the root.

_

 

%:. º%-Selects Equation mode; displays the equation.

 ! Search fails with guesses 0 and 10

)Displays the final estimate of x. ) Previous estimate was not the

same.

) Final value for f(x) is relatively large.

Example: An Asymptote.

Find the root of the equation

C–10 More about Solving

File name 32sii-Manual-E-0424

 

Printed Date : 2003/4/24

Size : 17.7 x 25.2 cm