Author Topic: [Ti Nspire CX] - How to make lines such as x = 2  (Read 15964 times)

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Offline Atham

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[Ti Nspire CX] - How to make lines such as x = 2
« on: March 04, 2012, 06:03:49 am »
Hey there,
is there a way to make lines such as x = 2 in the TI Nspire CX?

Thanks in advance

~A.T.
« Last Edit: March 04, 2012, 06:13:02 am by Atham »

Offline Yeong

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Re: [Ti Nspire CX] - How to make lines such as x = 2
« Reply #1 on: March 04, 2012, 12:30:16 pm »
can't you change y1 to x1 by deleting the Y and replace with X?
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Offline Atham

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Re: [Ti Nspire CX] - How to make lines such as x = 2
« Reply #2 on: March 04, 2012, 12:48:24 pm »
I tried that. It says
Error
not a function

Mind you I am using the graph type "Function"
« Last Edit: March 04, 2012, 12:51:58 pm by Atham »

Offline Nick

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Re: [Ti Nspire CX] - How to make lines such as x = 2
« Reply #3 on: March 04, 2012, 01:04:57 pm »
i don't think there will be one, since a function is something that has only 1 y value per x value.. and since x = 2 has an unlimited number of y values, it won't be possible as a function. maybe as parametric

Offline lkj

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Re: [Ti Nspire CX] - How to make lines such as x = 2
« Reply #4 on: March 04, 2012, 01:14:24 pm »
I think Nick is right, it isn't currently possible.

Offline Atham

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Re: [Ti Nspire CX] - How to make lines such as x = 2
« Reply #5 on: March 04, 2012, 01:14:47 pm »
I am not familiar with parametric equations yet (I am 14), but I need a way to get x = 2 types of lines.

Offline GB

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Re: [Ti Nspire CX] - How to make lines such as x = 2
« Reply #6 on: March 04, 2012, 01:16:37 pm »
If the Nspire allows for drawing of vertical lines on the graph screen, you can draw one at the "2" mark on the X-axis. That's about as close as I know how to get.
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Offline lkj

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Re: [Ti Nspire CX] - How to make lines such as x = 2
« Reply #7 on: March 04, 2012, 01:53:34 pm »
You could also do f(x)=1000x - 2000. It isn't really vertical, but you can't see the difference.

Offline Chockosta

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Re: [Ti Nspire CX] - How to make lines such as x = 2
« Reply #8 on: March 04, 2012, 02:10:46 pm »
It's quite easy with parametric equations...

Just use {x1(t)=2, y1(t)=t}

Offline Jonius7

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Re: [Ti Nspire CX] - How to make lines such as x = 2
« Reply #9 on: March 04, 2012, 05:52:45 pm »
It doesn't really work with a function, as the equation would be undefined when trying to express with f(x) or y, but the parametric equation works nicely.
On another note, asymptotes (the vertical ones shown as dotted lines) can also be shown (in a manual fashion though).
« Last Edit: March 04, 2012, 05:53:30 pm by Jonius7 »
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Offline cyanophycean314

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Re: [Ti Nspire CX] - How to make lines such as x = 2
« Reply #10 on: March 04, 2012, 09:40:54 pm »
Parametrically, it works, but you can also do stuff like y=1000(x-b) where to graph x=b for staying in function mode. Basically the same way lkj said.

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Re: [Ti Nspire CX] - How to make lines such as x = 2
« Reply #11 on: March 04, 2012, 11:09:48 pm »
What about that  :



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Re: [Ti Nspire CX] - How to make lines such as x = 2
« Reply #12 on: March 05, 2012, 05:35:49 am »
Woo hoo! So need that feature to rotate the sine curve so that x-> y and y-> x.
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Offline cyanophycean314

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Re: [Ti Nspire CX] - How to make lines such as x = 2
« Reply #13 on: March 06, 2012, 08:11:21 pm »
 :-\ I don't really need that function that much. It certainly is useful, but I want to keep ndless...  :-\

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Re: [Ti Nspire CX] - How to make lines such as x = 2
« Reply #14 on: March 06, 2012, 10:10:22 pm »
Hm, games, or things that actually benefit class...

Meh, I'll keep ndless.