New guy and programming problem

[Dieter]

(08-27-2017 05:12 PM)Gerson W. Barbosa Wrote:  For this task, no program is needed on the WP34S:
...
What resistor should be paralleled to a 100 ohm resistor so that the equivalent resistance is 32 ohm?

On the WP34S I just do

100 +/- [ENTER] 32 [g] || => 47.0588235294

With one of the above programs you just do
–100 [ENTER] 32 [XEQ]"PAR" => 47,0588...

Sure, it's the same formula. ;-)

(08-27-2017 05:12 PM)Gerson W. Barbosa Wrote:  Is there another calculator that offers this as a built-in function?

I don't know one. But I admit I never understood why this rather special function has been implemented on the 34s and even got direct keyboard access. OK, there are a few occasions when the parallel function may be used for other mathematical applications, but IMvHO others would have made more sense. For instance functions that accurately evaluate √(1+x²) – 1, or in addition to e^x–1 a general a^x–1 function. Or 1–sin(x) and 1–cos(x). Or √(x²+y²). And let's not forget the useful DIVMOD function that simultaneously returns both quotient and remainder. Some of these are part of the Boost math package, so they seem to make sense for others, too. ;-)

On the other hand the || function can be programmed easily in just four steps, cf. the examples above.

Dieter