HP 35s User Manual page 334

Now attempt to find a negative root by entering guesses 0 and –10. Notice that the
function is undefined for values of x between 0 and –0.3 since those values
produce a positive denominator but a negative numerator, causing a negative
square root.
Keys:
X


X
Example: A Local "Flat" Region.
Find the root of the function
f(x) = x + 2 if x
f(x) = 1 for –1 x
f(x) = –x + 2 if x 1.
In RPN mode, enter the function as the program:
  
 
 
  
 
 
 
 
 
 
 
 
Checksum and length: 9412 39
D-12
More about Solving
Display:
_

  
–1,
1 (a local flat region),
Description:
Selects Equation mode; displays
the left end of the equation.
No root found for f(x).