On a HP 50g graphing calculator, how do you get a numerical value for pi?
[2009-12-15 05:43:58]

Q: I greatly regret having purchased an HP 50g calculator which I can hardly use due to poor instructions, crippled HP website and non-existent support. Nevertheless I would be truly grateful if someone can tell me how to get the actual value for pi (3.142)

A: From the user manual (see attached link) --

- Press the MODE button to activate the CALCULATOR MODES input form.

Of interest at this point is the changing of the CAS settings.
This is accomplished by pressing the

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HP 10bII+ Calculator Review | Student Buying Guide

 

The HP 10bII+ offers two types of input, Algebraic and Chain Algebraic, that’s an improvement over just the Algebraic input offered by the 10bII.  However, RPN (Reverse Polish Notation) input favored by some is not offered for all operations on the HP 10bII+, if you want that functionality you can look to the more expensive ($69.99) HP 12c calculator .  I’m guessing that most people will be totally comfortable with the standard Algebraic input offered by the HP 10bII+ and indeed RPN will be foreign to many finance students, for a rundown of different types of calculator input you can read this article .

The number of built-in functions has increased from around 100 on the older 10bII to over 170 on the 10bII+, quite a jump!  To get an idea of the available functions take a look at the handy diagram below:

...

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