Casio fx-9750G plus graphic calculator question

[paulo1913]

How do I creat basic parabolas using this particular calculator?

[ghstofmaxwll]

I have the fx9860g. I dont think they would be any different though for this purpose.

 

Go to >menu/ graph/EXE

 

...Then define Y1 with an exponent on "x" i.e. Y1:x^2. So you have a non linear function.

 

Simple!

[paulo1913]

I tried x^2 and it works but when I try a different one it is drawn the same as x^2...

[Cap'n Refsmmat]

What different one? Give an example.

[paulo1913]

y=2x^2+3

[Cap'n Refsmmat]

It should look similar to y=x², but it should be narrower and a little higher on the graph. You just see the same thing?

[paulo1913]

It is narrower but it has the same line of symetry at (0,0)...

[Cap'n Refsmmat]

It should have a line of symmetry at (0,0). You didn't move it left or right. If you want it to move left, do y=(x+2)² or something similar.

[paulo1913]

What does the "+3" bit do in the equation?

[Cap'n Refsmmat]

In 2x²+3? Moves it up 3 units.

[paulo1913]

But on the calculator it looks the same as x^2...

[Cap'n Refsmmat]

Perhaps they're so close together that you can't tell the difference. Try a bigger number, like 10.

[paulo1913]

I just tried 100 and it worked but not as much as you would think... Is there a way to adjust the settings or something to choose what the x variables are?

[Wookiee]

Check the window size. Thats probably what has you stumped. Check your manual to see how to change it.

 

Thats just my guess...

 

-Randy

[Lumpwood]

I've a CFX-9850GB but I think it should be fairly similar to yours, if you aren't seeing much change between your graphs the view is more than likely zoomed out too far. When the calculator plots the graph press the zoom key (F2 on my model) and this will open a zoom menu which should allow you to zoom in and out.

[paulo1913]

Is there anyway to change it so it goes from, for example, y=x^2 to x=y^2?

[ghstofmaxwll]

I doubt it because there is no purpose for that in maths. If you want to see that though just rotate your calculator 90degrees.

[paulo1913]

Is there a way to get x as the function?

[ghstofmaxwll]

Is there a way to get x as the function?

No because f of x is the accepted modus operandi in maths. It wont help you to switch axis anyway, what will help you is listening to the people telling you about the zoom function and increment settings.