HP 35s User Manual

More about Solving D-7
Now, solve to find the root:
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 an
opposite sign for f(x).
Example:
Find the root of the equation
As x approaches , f(x) becomes a very large positive or negative number.
Enter the equation as an expression.
Keys: Display: Description:
X

_
Your initial guesses for the root.


Selects Equation mode; displays
the equation.
X



Finds a root with guesses 0 and 5.
 

Shows root, to 11 decimal places.
 

The previous estimate is slightly
bigger.


f(x) is relatively large.
Keys: Display: Description:

Selects Equation mode.
X4
X
Õ


Enters the equation.


01
6
2
=−
−x
x
6

HP 35s Specifications

General

Type	Scientific
Form factor	Pocket
Product color	Black
Digits	14 digits
Display number of lines	2 lines
Keyboard type	Alphanumeric
Menus and prompts	Yes

Weight and Dimensions

Dimensions (WxDxH)	157.9 x 18 x 82 mm