# noob using an hp 48g - Hewlett Packard

This is a discussion on noob using an hp 48g - Hewlett Packard ; this is my first graphing calculator, can someone teach me how to graph a circle with the equation x^2 +y^2=1 thank you....

# Thread: noob using an hp 48g

1. ## noob using an hp 48g

this is my first graphing calculator, can someone teach me how to
graph a circle with the equation
x^2 +y^2=1

thank you.

2. ## Re: noob using an hp 48g

tigervolvo@gmail.com wrote:
> this is my first graphing calculator, can someone teach me how to
> graph a circle with the equation
> x^2 +y^2=1

If you don't have the manual in dead tree format, here is an online
version of it:

It covers all sorts of plots. I prefer to rewrite such equations as
functions (y = f(x)), and plot them with the "Function" plot. But, with
a second degree or lower polynomial, you can enter it directly, and use the
"Conic" plot. Just read the manual so you understand what each function
is doing.

- Kurt

3. ## Re: noob using an hp 48g

In article
,
tigervolvo@gmail.com wrote:

> this is my first graphing calculator, can someone teach me how to
> graph a circle with the equation
> x^2 +y^2=1

Yes, someone can.

--
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we will bury them with their own confusion.
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4. ## Re: noob using an hp 48g

On Sun, 20 Jan 2008 21:45:39 -0600:

> graph 'X^2+Y^2=1'

"Polar" plot type, with equation 'X=1'

'X^2+Y^2=1' with "Conic" works too, if flag -1 is cleared
(otherwise you get only a semicircle)

Or '(COS(X),SIN(X))' "Parametric" plot (in RADian angle mode)

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