WP-34S newbie user - but how to start?

[Dieter]

(01-28-2017 08:18 PM)Csaba Tizedes Wrote:  

Code:

A.) Calculating area from diameter: D:=2m -> A=3.14m^2
2 STO 00     // solve the equation for A
STO 01
f SLV 'CIR'
on the stack you can see the result: 3.14

Don't forget to provide two guesses for the solution in X and Y. So if you think the root is between 0 and 10, simply type 0 [ENTER] 10 SLV "CIR".

Otherwise SLV will start with the two values that happen to be in X in Y at that point. Which can result in unexpected results or none at all. For instance, in your example B, 1 and 150 are on the stack as these are the last two values entered. So SLV will try to find a solution between 1 and 150...

(01-28-2017 08:18 PM)Csaba Tizedes Wrote:  ...the XTAL? command gives me "true", so I guess I have a crystal!

That's what I was about to suggest. ;-)
The XTAL? test is supposed to check whether a crystal is installed or not.

Dieter