Omnimaga
Calculator Community => TI Calculators => General Calculator Help => Topic started by: Munchor on November 09, 2010, 04:55:15 pm
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Hey there,
I'm doing Cartesian graphics at school and both my calcs (84 and NSpire) can't do the following:
x>4
x=3y
They can only do:
f1(x)=4
(which is the same than:)
y=4
y=7x^2
So, is there a way to change it or any other graphics program that can deal with x as an independent variable?
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If you can make Y in terms of X you should be fine. For the X>4, I don't know what to say. I don't own an Nspire; does it have a DrawInv equivalent?
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if you install Inequalz, you should be able to activate x=, and as for x=3y, change that to y=x/3. ;)
also, for x>4, you can move the cursor to the slanted line next to the "Y=" on the screen. press that until you get "/" with the top part shaded, that is equivalent to ">" press it until you get "/" with the bottom shaded, that is "<".
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if you install Inequalz, you should be able to activate x=, and as for x=3y, change that to y=x/3. ;)
also, for x>4, you can move the cursor to the slanted line next to the "Y=" on the screen. press that until you get "/" with the top part shaded, that is equivalent to ">" press it until you get "/" with the bottom shaded, that is "<".
Okay...
Can I rate that post up?
I WILL do so, thanks much Inequal installed, very good working, perfect!
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If you can make Y in terms of X you should be fine. For the X>4, I don't know what to say. I don't own an Nspire; does it have a DrawInv equivalent?
Yep. The DrawInv command is included with the 84+ series.
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Also, you can acheive the same thing with parametric equations. Put T in for Y=, and your equation in for X=.
If I am mistaken, please let me know. :)
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While we're giving graphing tips, if you want to graph a piece-wise function, enclose the parameters in curly braces, and then the equation in curly braces.
Example:
Y={X>2 and X<7}{X2}
This will graph X2 from 3 to 6. I found this helpful earlier this year in Pre-Calc.
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Shouldn't that just be parentheses?
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I've been wondering how to do piecewise functions for a long time. Thanks.
EDIT: Mride, nope. Parentheses designate an expression. Curly brackets designate something else.
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They should be parentheses. Braces are for families of functions.
EDIT: Ninja'd by
I've been wondering how to do piecewise functions for a long time. Thanks.
EDIT: Mride, nope. Parentheses designate an expression. Curly brackets designate something else.
What calc is this for?
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Nope, curly braces.
Screenie:
Edit: This is for the 83+/84+ calcs.
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Nope, curly braces.
Screenie:
Edit: This is for the 83+/84+ calcs.
Works too, great!
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I think they're just multiplying the families together. It also works with parentheses or even multiplication (so Y1=(X<2 and X>7)(X2) would also work). Braces are used to graph a family of functions, like Y1=X^{1,2,3,4,5}.
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Well I don't know about the curly bracket thing really but it does work with regular parentheses the same way, I mean all it's doing is making everything equal zero unless it's within those bounds, which both accomplish.
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I'm pretty sure it's even slower with braces, since it has to convert them into lists before graphing them as families of functions.
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I think they're just multiplying the families together. It also works with parentheses or even multiplication (so Y1=(X<2 and X>7)(X2) would also work). Braces are used to graph a family of functions, like Y1=X^{1,2,3,4,5}.
Also, using braces allows you to have a nearly unlimited number of functions.
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I think they're just multiplying the families together. It also works with parentheses or even multiplication (so Y1=(X<2 and X>7)(X2) would also work). Braces are used to graph a family of functions, like Y1=X^{1,2,3,4,5}.
Also, using braces allows you to have a nearly unlimited number of functions.
With Inequal I also think you can use Curlies
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Yep, you can. Not sure about X=, though...
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Yep, you can. Not sure about X=, though...
X= does work, X=4 was the first I tried actually ;)
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Yep, you can. Not sure about X=, though...
X= does work, X=4 was the first I tried actually ;)
I meant I didn't know if X= supported function families.
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:O, like X=2Y, :D
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:O, like X=2Y, :D
Nope, you still can't do that in Inequalz. It only allows you to input constant functions for X, like X=5.
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:O, like X=2Y, :D
Nope, you still can't do that in Inequalz. It only allows you to input constant functions for X, like X=5.
:O I can mix curly braces with Inequalz then :D
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:O, like X=2Y, :D
Nope, you still can't do that in Inequalz. It only allows you to input constant functions for X, like X=5.
:O I can mix curly braces with Inequalz then :D
But not with X=. If you input X={1,2}, it gets cleared, unfortunately.
But 6 different vertical lines should be enough :D
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(http://www.omnimaga.org/index.php?action=dlattach;topic=5230.0;attach=4424;image)
Exactly what I mean, mix Inequal with Curly Braces system :D
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(http://www.omnimaga.org/index.php?action=dlattach;topic=5230.0;attach=4424;image)
Exactly what I mean, mix Inequal with Curly Braces system :D
What? It doesn't work in the screenshot...
What are you talking about?
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(http://www.omnimaga.org/index.php?action=dlattach;topic=5230.0;attach=4424;image)
Exactly what I mean, mix Inequal with Curly Braces system :D
What? It doesn't work in the screenshot...
What are you talking about?
Using Y you can, in my calculator you can have Inequal installed and use Y to do {X=2Y} :D
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(http://www.omnimaga.org/index.php?action=dlattach;topic=5230.0;attach=4424;image)
Exactly what I mean, mix Inequal with Curly Braces system :D
What? It doesn't work in the screenshot...
What are you talking about?
Using Y you can, in my calculator you can have Inequal installed and use Y to do {X=2Y} :D
Um ... still doesn't work. How are you doing it? Could you post a screenshot?
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AHhaha, just tried it: it doens't work. I confused '=' functions with '>' and '<' functions.
Sorry :s
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AHhaha, just tried it: it doens't work. I confused '=' functions with '>' and '<' functions.
Sorry :s
Have you tried > or < either? IIRC you can't have any Y= equation with Y inside, no matter what extra graphing app you have installed. It wouldn't work anyway since it's not a function. And X= only takes single constant values. If you want to graph a complete X= equation, use DrawInv . It doesn't actually make a graph that you can trace and do other stuff with, unfortunately :-\
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AHhaha, just tried it: it doens't work. I confused '=' functions with '>' and '<' functions.
Sorry :s
Have you tried > or < either? IIRC you can't have any Y= equation with Y inside, no matter what extra graphing app you have installed. It wouldn't work anyway since it's not a function. And X= only takes single constant values. If you want to graph a complete X= equation, use DrawInv . It doesn't actually make a graph that you can trace and do other stuff with, unfortunately :-\
Maybe someone in the community should make something better than Inequalz in Asm(, is it possible?