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

[Dieter]

(02-18-2015 03:10 AM)lrdheat Wrote:  Dieter, thanks for the coding...I hadn't been aware of the SDR command, or using INC to take care of the case for x=0.

You may simply do it the way we did in the olden days:

Code:

001 LBL A
002 X=0?
003 e^x       // or x!
004 EEX
005 4
006 /
007 RTN

Rounding the dx value to a single significant digit may improve accuracy, so on the 34s I usually add a final RSD 01.

Dieter