> Your 2 e X Y e 2 + SQRT doesn't work for me on my trusty old HP11C (&
> I can't see how is should work).
> 
> X e 2 [y^x] Y e 2 [y^x] + SQRT  does but I'd use :-   X e * Y e * + SQRT

Yep.
Enthusiasm running ahead of fingers.
Don't blame the RPN :-)
You are of course correct.


    R

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