WP 34S problem in solving f'(x)=0

[BarryMead]

(02-17-2015 08:10 PM)Thomas Klemm Wrote:  

(02-17-2015 07:41 PM)lrdheat Wrote:  Do you remember the keystrokes to set dx?

From the INDEX OF OPERATIONS for f’(x):

Quote:This command will attempt to call a user routine
labeled 'δx' to provide a fixed step size dx. If that
routine is not defined, a step size of 0.1 is used.

HTH
Thomas

In program edit mode at the end of your program simply press f lbl Enter g D . Enter
This will enter a label of 'ΔX' Upper case delta works just as well as lower case delta for dx.
Then enter whatever program steps you want to define the delta x value "EEX" "+/-" "3" for instance,
and "g" "RTN" to return from the delta x routine.

Hope this helps, Barry