50g

Algebraic expressions are usually entered between ' ' delimiters. So, what you should type is...

'X^2+Y^2'

--- On Fri, 2/20/09, J <professorman40@...> wrote:

> From: J <professorman40@...>
> Subject: [50g] HP50G.. a joke?
> To: 50g@yahoogroups.com
> Date: Friday, February 20, 2009, 2:30 PM
> Hello everyone:
>  
> This is ridiculous, but more ridiculus is the User's
> Manual. How can I enter an equation on the PLOT SETUP menu?
> (Left + 2D/3D buttons). I am trying to type "X^2 +
> Y^2", just like it says in the user's manual. When
> I hit enter, "too few arguments". The user manual
> also says "change Type to Fast 3D". I just never
> found those options.
>  
> I am getting irritated with a calculator said to be good. I
> switched from Texas to HP and now I get this. Can anyone
> help me with these questions?
>  
> thanks

Oh, Fast 3D...

Highlight the "Type:" field and press the CHOOSE button. It's further down that list.

--- On Fri, 2/20/09, Don Hart <ddhart1@...> wrote:

> From: Don Hart <ddhart1@...>
> Subject: Re: [50g] HP50G.. a joke?
> To: 50g@yahoogroups.com
> Date: Friday, February 20, 2009, 3:23 PM
> Algebraic expressions are usually entered between '
> ' delimiters. So, what you should type is...
>
> 'X^2+Y^2'
>
> --- On Fri, 2/20/09, J <professorman40@...>
> wrote:
>
> > From: J <professorman40@...>
> > Subject: [50g] HP50G.. a joke?
> > To: 50g@yahoogroups.com
> > Date: Friday, February 20, 2009, 2:30 PM
> > Hello everyone:
> >  
> > This is ridiculous, but more ridiculus is the
> User's
> > Manual. How can I enter an equation on the PLOT SETUP
> menu?
> > (Left + 2D/3D buttons). I am trying to type "X^2
> +
> > Y^2", just like it says in the user's manual.
> When
> > I hit enter, "too few arguments". The user
> manual
> > also says "change Type to Fast 3D". I just
> never
> > found those options.
> >  
> > I am getting irritated with a calculator said to be
> good. I
> > switched from Texas to HP and now I get this. Can
> anyone
> > help me with these questions?
> >  
> > thanks
>
>
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>

Hello J,

this is what I warned about: the HP 50G is full of RPN, with a little
algebraic input duct-taped onto it.

When you just start entering something over the "EQ" field it expects
Reverse Polish input. That is, when you start to enter X ^ 2 etc… the
^ command failes, because it expcts two operands. Thus the correct way
of entering your equation this way would be X 2 ^ Y 2 ^ +.

Alternatively you can enclose your (algebraic) input in single quotes.
What you enter with that is a single "Algebraic Object", which is then
being parsed for you.

And thirdly you can hit the "edit" (F1) button and enter your equation
graphically. This is the same as in the EQW equation writer.


This kind of choice is common in the 50g. The art in using it is to
choose wisely which is appropriate when.


Get the User's Guide and the Advanced User's Reference from
http://is.gd/kl52 - they are much more comprehensive than the User's
Manual. Also poke around HP's site and hpcalc.org.


Greetings, Matthias

--- In 50g@yahoogroups.com, J <professorman40@...> wrote:
>
> Hello everyone:
>  
> This is ridiculous, but more ridiculus is the User's Manual. How can
I enter an equation on the PLOT SETUP menu? (Left + 2D/3D buttons).

Hello J, just press [Left] [2D/3D] remember that if you are in RPN you
have hold [Left] and press [2D/3D]
The type of plot is highlighted, if fast3D is not selected, press
CHOOS in the soft menu, you can use the up and down arrows to select
fast3D or just press and hold [ALPHA] and press [F] and then press
[ENTER] or OK in the soft menu.
Now press the down arrow to go to EQ where you are going to enter the
equation to plot, press the single quote mark, you will notice that the
soft menu now have X and Y to help you enter the equation,
enter 'X^2+Y^2' and press [ENTER] or OK in the soft menu
You are ready to plot the graphic press DRAW in the soft menu, when the
graphic comes, play with the arrows to see the graphic in different
positions.

OK, I followed those instructions
The only graphic I then see are small x,y,z arrows extending from a
common origin.
Is there supposed to be something else?
Thanks,
Steve

--- In 50g@yahoogroups.com, "Juan C." <jcbuchin@...> wrote:
>
> Hello J, just press [Left] [2D/3D] remember that if you are in RPN you
> have hold [Left] and press [2D/3D]
> The type of plot is highlighted, if fast3D is not selected, press
> CHOOS in the soft menu, you can use the up and down arrows to select
> fast3D or just press and hold [ALPHA] and press [F] and then press
> [ENTER] or OK in the soft menu.
> Now press the down arrow to go to EQ where you are going to enter the
> equation to plot, press the single quote mark, you will notice that the
> soft menu now have X and Y to help you enter the equation,
> enter 'X^2+Y^2' and press [ENTER] or OK in the soft menu
> You are ready to plot the graphic press DRAW in the soft menu, when the
> graphic comes, play with the arrows to see the graphic in different
> positions.
>

You are suppose to see the graphic of the equation Z=X^2+Y^2, probably
the parameters of the graphic are not the adequate, purge the variable
PPAR and do it again, press [VAR], the single quote mark and PPAR from
the soft menu and then [ENTER] ans then [TOOL] and PURGE from the soft
menu.