HP 35s Scientific Calculator - Manual (Page 333)

More about Solving D-11
Watch what happens when you use negative values for guesses:
Example: Find the root of the equation.
Enter the equation as an expression: 
First attempt to find a positive root:
Keys: Display: Description:
X
 
Your negative guesses for the root.
 
Selects Equation mode; displays
the equation.
X 

Solves for X; displays the result.
Keys: Display: Description:

Selects Equation mode.
X
4
X
ÕÕ 


Enters the equation.



Checksum and length.

Cancels Equation mode.
Keys: Display: Description:
X

_
Your positive guesses for the
root.


Selects Equation mode;
displays the left end of the
equation.
X 

Calculates the root using
guesses 0 and 10.
0 5 . 0 0.3)] (x [x = − + ч